diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7eb02e2b6..69530a6e2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -52,7 +52,7 @@ jobs:
     env:
       JAVA_OPTS: -Xms800M -Xmx2G -Xss6M -XX:ReservedCodeCacheSize=128M -server -Dsbt.io.virtual=false -Dfile.encoding=UTF-8
       JVM_OPTS: -Xms800M -Xmx2G -Xss6M -XX:ReservedCodeCacheSize=128M -server -Dsbt.io.virtual=false -Dfile.encoding=UTF-8
-      SCALA_212: 2.12.19
+      SCALA_212: 2.12.20
       SCALA_3: 3.1.0
       UTIL_TESTS: "utilCache/test utilControl/test utilInterface/test utilLogging/test utilPosition/test utilRelation/test utilScripted/test utilTracking/test"
       SBT_LOCAL: false
@@ -86,6 +86,8 @@ jobs:
       with:
         distribution: "${{ matrix.distribution }}"
         java-version: "${{ matrix.java }}"
+    - name: Setup SBT
+      uses: sbt/setup-sbt@v1
     - name: Set up Python 3.12
       uses: actions/setup-python@v5
       with:
diff --git a/.github/workflows/dependency-graph.yml b/.github/workflows/dependency-graph.yml
index de558d3bb..387a2a275 100644
--- a/.github/workflows/dependency-graph.yml
+++ b/.github/workflows/dependency-graph.yml
@@ -2,7 +2,7 @@
 name: Submit Dependency Graph
 on:
   push:
-    branches: [1.9.x] # default branch of the project
+    branches: [1.10.x, develop]
 permissions: {}
 jobs:
   submit-graph:
@@ -13,4 +13,5 @@ jobs:
     runs-on: ubuntu-latest # or windows-latest, or macOS-latest
     steps:
       - uses: actions/checkout@v4
+      - uses: sbt/setup-sbt@v1
       - uses: scalacenter/sbt-dependency-submission@v3
diff --git a/build.sbt b/build.sbt
index d1af2e15c..10ee6465f 100644
--- a/build.sbt
+++ b/build.sbt
@@ -48,7 +48,7 @@ ThisBuild / libraryDependencySchemes += "org.scala-lang.modules" %% "scala-xml"
 
 Global / semanticdbEnabled := !(Global / insideCI).value
 // Change main/src/main/scala/sbt/plugins/SemanticdbPlugin.scala too, if you change this.
-Global / semanticdbVersion := "4.7.8"
+Global / semanticdbVersion := "4.9.9"
 val excludeLint = SettingKey[Set[Def.KeyedInitialize[_]]]("excludeLintKeys")
 Global / excludeLint := (Global / excludeLint).?.value.getOrElse(Set.empty)
 Global / excludeLint += componentID
@@ -1311,52 +1311,6 @@ lazy val sbtIgnoredProblems = {
   )
 }
 
-def runNpm(command: String, base: File, log: sbt.internal.util.ManagedLogger) = {
-  import scala.sys.process._
-  try {
-    val exitCode = Process(s"npm $command", Option(base)) ! log
-    if (exitCode != 0) throw new Exception("Process returned exit code: " + exitCode)
-  } catch {
-    case e: java.io.IOException => log.warn("failed to run npm " + e.getMessage)
-  }
-}
-
-lazy val vscodePlugin = (project in file("vscode-sbt-scala"))
-  .settings(
-    bspEnabled := false,
-    crossPaths := false,
-    crossScalaVersions := Seq(baseScalaVersion),
-    publish / skip := true,
-    Compile / compile := {
-      val _ = update.value
-      runNpm("run compile", baseDirectory.value, streams.value.log)
-      sbt.internal.inc.Analysis.empty
-    },
-    update := {
-      val old = update.value
-      val t = target.value / "updated"
-      val base = baseDirectory.value
-      val log = streams.value.log
-      if (t.exists) ()
-      else {
-        runNpm("install", base, log)
-        IO.touch(t)
-      }
-      old
-    },
-    cleanFiles ++= {
-      val base = baseDirectory.value
-      Vector(
-        target.value / "updated",
-        base / "node_modules",
-        base / "client" / "node_modules",
-        base / "client" / "server",
-        base / "client" / "out",
-        base / "server" / "node_modules"
-      ) filter { _.exists }
-    }
-  )
-
 def scriptedTask(launch: Boolean): Def.Initialize[InputTask[Unit]] = Def.inputTask {
   val _ = publishLocalBinAll.value
   val launchJar = s"-Dsbt.launch.jar=${(bundledLauncherProj / Compile / packageBin).value}"
@@ -1470,7 +1424,7 @@ lazy val docProjects: ScopeFilter = ScopeFilter(
   inConfigurations(Compile)
 )
 lazy val javafmtOnCompile = taskKey[Unit]("Formats java sources before compile")
-lazy val scriptedProjects = ScopeFilter(inAnyProject -- inProjects(vscodePlugin))
+lazy val scriptedProjects = ScopeFilter(inAnyProject)
 
 def customCommands: Seq[Setting[_]] = Seq(
   commands += Command.command("setupBuildScala212") { state =>
diff --git a/launcher-package/build.sbt b/launcher-package/build.sbt
index 436ab3c48..88a5f6b11 100755
--- a/launcher-package/build.sbt
+++ b/launcher-package/build.sbt
@@ -26,7 +26,7 @@ lazy val sbtVersionToRelease = sys.props.getOrElse("sbt.build.version", sys.env.
       }))
 
 lazy val scala210 = "2.10.7"
-lazy val scala212 = "2.12.19"
+lazy val scala212 = "2.12.20"
 lazy val scala210Jline = "org.scala-lang" % "jline" % scala210
 lazy val jansi = {
   if (sbtVersionToRelease startsWith "1.") "org.fusesource.jansi" % "jansi" % "1.12"
@@ -34,7 +34,7 @@ lazy val jansi = {
 }
 lazy val scala212Compiler = "org.scala-lang" % "scala-compiler" % scala212
 lazy val scala212Jline = "jline" % "jline" % "2.14.6"
-// use the scala-xml version used by the compiler not the latest: https://github.com/scala/scala/blob/v2.12.19/versions.properties
+// use the scala-xml version used by the compiler not the latest: https://github.com/scala/scala/blob/v2.12.20/versions.properties
 lazy val scala212Xml = "org.scala-lang.modules" % "scala-xml_2.12" % "2.2.0"
 lazy val sbtActual = "org.scala-sbt" % "sbt" % sbtVersionToRelease
 
diff --git a/main/src/main/scala/sbt/PluginCross.scala b/main/src/main/scala/sbt/PluginCross.scala
index 823db18c7..6ce9bc5c5 100644
--- a/main/src/main/scala/sbt/PluginCross.scala
+++ b/main/src/main/scala/sbt/PluginCross.scala
@@ -100,7 +100,7 @@ private[sbt] object PluginCross {
     VersionNumber(sv) match {
       case VersionNumber(Seq(0, 12, _*), _, _) => "2.9.2"
       case VersionNumber(Seq(0, 13, _*), _, _) => "2.10.7"
-      case VersionNumber(Seq(1, 0, _*), _, _)  => "2.12.19"
+      case VersionNumber(Seq(1, 0, _*), _, _)  => "2.12.20"
       case _                                   => sys.error(s"Unsupported sbt binary version: $sv")
     }
 }
diff --git a/main/src/main/scala/sbt/TemplateCommandUtil.scala b/main/src/main/scala/sbt/TemplateCommandUtil.scala
index afb2c5ac7..86d63c924 100644
--- a/main/src/main/scala/sbt/TemplateCommandUtil.scala
+++ b/main/src/main/scala/sbt/TemplateCommandUtil.scala
@@ -279,9 +279,9 @@ private[sbt] object TemplateCommandUtil {
         System.err.println("Local template not found for: " + arguments.mkString(" "))
     }
 
-  private final val defaultScalaV = "3.3.0"
+  private final val defaultScalaV = "3.3.4"
   private def scalaToolkitTemplate(): Unit = {
-    val defaultScalaToolkitV = "0.2.0"
+    val defaultScalaToolkitV = "0.5.0"
     val scalaV = ask("Scala version", defaultScalaV)
     val toolkitV = ask("Scala Toolkit version", defaultScalaToolkitV)
     val content = s"""
@@ -299,7 +299,7 @@ libraryDependencies += (toolkitTest % Test)
   }
 
   private def typelevelToolkitTemplate(): Unit = {
-    val defaultTypelevelToolkitV = "0.1.3"
+    val defaultTypelevelToolkitV = "0.1.28"
     val scalaV = ask("Scala version", defaultScalaV)
     val toolkitV = ask("Typelevel Toolkit version", defaultTypelevelToolkitV)
     val content = s"""
@@ -335,9 +335,9 @@ lazy val core = (projectMatrix in file("core"))
     IO.write(new File("build.sbt"), content)
 
     val pluginsContent = """
-addSbtPlugin("com.eed3si9n" % "sbt-projectmatrix" % "0.9.0")
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.10.1")
-addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.10")
+addSbtPlugin("com.eed3si9n" % "sbt-projectmatrix" % "0.10.0")
+addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.17.0")
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.5")
 """
     IO.write(new File("project/plugins.sbt"), pluginsContent)
     copyResource("ScalaMain.scala.txt", new File("core/src/main/scala/example/Main.scala"))
diff --git a/main/src/main/scala/sbt/internal/AbstractTaskProgress.scala b/main/src/main/scala/sbt/internal/AbstractTaskProgress.scala
index 18e6ffe2d..aabeb8401 100644
--- a/main/src/main/scala/sbt/internal/AbstractTaskProgress.scala
+++ b/main/src/main/scala/sbt/internal/AbstractTaskProgress.scala
@@ -122,7 +122,7 @@ private[sbt] abstract class AbstractTaskExecuteProgress extends ExecuteProgress[
 object AbstractTaskExecuteProgress {
   private[sbt] class Timer() {
     val startNanos: Long = System.nanoTime()
-    val threadId: Long = Thread.currentThread().getId
+    val threadName: String = Thread.currentThread().getName
     var endNanos: Long = 0L
     def stop(): Unit = {
       endNanos = System.nanoTime()
diff --git a/main/src/main/scala/sbt/internal/GCUtil.scala b/main/src/main/scala/sbt/internal/GCUtil.scala
index e114c9e85..53a5c0031 100644
--- a/main/src/main/scala/sbt/internal/GCUtil.scala
+++ b/main/src/main/scala/sbt/internal/GCUtil.scala
@@ -36,14 +36,6 @@ private[sbt] object GCUtil {
       log.debug(s"Forcing garbage collection...")
       // Force the detection of finalizers for scala.reflect weakhashsets
       System.gc()
-      // Force finalizers to run.
-      try {
-        System.runFinalization()
-      } catch {
-        case _: NoSuchMethodError =>
-      }
-      // Force actually cleaning the weak hash maps.
-      System.gc()
     } catch {
       case NonFatal(_) => // gotta catch em all
     }
diff --git a/main/src/main/scala/sbt/internal/TaskTraceEvent.scala b/main/src/main/scala/sbt/internal/TaskTraceEvent.scala
index 57b2900e7..3b3131954 100644
--- a/main/src/main/scala/sbt/internal/TaskTraceEvent.scala
+++ b/main/src/main/scala/sbt/internal/TaskTraceEvent.scala
@@ -61,7 +61,7 @@ private[sbt] final class TaskTraceEvent
       def durationEvent(name: String, cat: String, t: Timer): String = {
         val sb = new java.lang.StringBuilder(name.length + 2)
         CompactPrinter.print(new JString(name), sb)
-        s"""{"name": ${sb.toString}, "cat": "$cat", "ph": "X", "ts": ${(t.startMicros)}, "dur": ${(t.durationMicros)}, "pid": 0, "tid": ${t.threadId}}"""
+        s"""{"name": ${sb.toString}, "cat": "$cat", "ph": "X", "ts": ${(t.startMicros)}, "dur": ${(t.durationMicros)}, "pid": 0, "tname": ${t.threadName}}"""
       }
       val entryIterator = currentTimings
       while (entryIterator.hasNext) {
diff --git a/main/src/main/scala/sbt/plugins/SemanticdbPlugin.scala b/main/src/main/scala/sbt/plugins/SemanticdbPlugin.scala
index 5d603bc11..46a018397 100644
--- a/main/src/main/scala/sbt/plugins/SemanticdbPlugin.scala
+++ b/main/src/main/scala/sbt/plugins/SemanticdbPlugin.scala
@@ -27,7 +27,7 @@ object SemanticdbPlugin extends AutoPlugin {
     semanticdbEnabled := SysProp.semanticdb,
     semanticdbIncludeInJar := false,
     semanticdbOptions := List(),
-    semanticdbVersion := "4.7.8"
+    semanticdbVersion := "4.9.9"
   )
 
   override lazy val projectSettings: Seq[Def.Setting[_]] = Seq(
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 50269aeeb..d12b45cee 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -4,7 +4,7 @@ import sbt.contraband.ContrabandPlugin.autoImport._
 
 object Dependencies {
   // WARNING: Please Scala update versions in PluginCross.scala too
-  val scala212 = "2.12.19"
+  val scala212 = "2.12.20"
   val scala213 = "2.13.14"
   val checkPluginCross = settingKey[Unit]("Make sure scalaVersion match up")
   val baseScalaVersion = scala212
diff --git a/sbt-app/src/sbt-test/actions/cross-advanced/build.sbt b/sbt-app/src/sbt-test/actions/cross-advanced/build.sbt
index 698d3d3e7..703f9b26a 100644
--- a/sbt-app/src/sbt-test/actions/cross-advanced/build.sbt
+++ b/sbt-app/src/sbt-test/actions/cross-advanced/build.sbt
@@ -1,6 +1,6 @@
 lazy val check = taskKey[Unit]("")
 lazy val compile2 = taskKey[Unit]("")
-lazy val scala212 = "2.12.19"
+lazy val scala212 = "2.12.20"
 lazy val scala213 = "2.13.12"
 
 lazy val root = (project in file("."))
diff --git a/sbt-app/src/sbt-test/actions/cross-advanced/test b/sbt-app/src/sbt-test/actions/cross-advanced/test
index 918b69731..47912f43c 100644
--- a/sbt-app/src/sbt-test/actions/cross-advanced/test
+++ b/sbt-app/src/sbt-test/actions/cross-advanced/test
@@ -17,7 +17,7 @@
 ## test + with command or alias
 > clean
 ## for command cross building you do need crossScalaVerions on root
-> set root/crossScalaVersions := Seq("2.12.19", "2.13.12")
+> set root/crossScalaVersions := Seq("2.12.20", "2.13.12")
 > + build
 $ exists foo/target/scala-2.12
 $ exists foo/target/scala-2.13
diff --git a/sbt-app/src/sbt-test/actions/cross-incremental/build.sbt b/sbt-app/src/sbt-test/actions/cross-incremental/build.sbt
index 751353326..79b7bdf27 100644
--- a/sbt-app/src/sbt-test/actions/cross-incremental/build.sbt
+++ b/sbt-app/src/sbt-test/actions/cross-incremental/build.sbt
@@ -1,5 +1,5 @@
-scalaVersion := "2.12.19"
-crossScalaVersions := List("2.12.19", "2.13.12")
+scalaVersion := "2.12.20"
+crossScalaVersions := List("2.12.20", "2.13.12")
 
 val setLastModified = taskKey[Unit]("Sets the last modified time for classfiles")
 setLastModified := {
diff --git a/sbt-app/src/sbt-test/actions/cross-multi-parser/build.sbt b/sbt-app/src/sbt-test/actions/cross-multi-parser/build.sbt
index bc2b10efb..bb4a1ec0e 100644
--- a/sbt-app/src/sbt-test/actions/cross-multi-parser/build.sbt
+++ b/sbt-app/src/sbt-test/actions/cross-multi-parser/build.sbt
@@ -1 +1 @@
-crossScalaVersions := Seq[String]("2.11.12", "2.12.19")
+crossScalaVersions := Seq[String]("2.11.12", "2.12.20")
diff --git a/sbt-app/src/sbt-test/actions/cross-multi-parser/test b/sbt-app/src/sbt-test/actions/cross-multi-parser/test
index b2666730a..005518291 100644
--- a/sbt-app/src/sbt-test/actions/cross-multi-parser/test
+++ b/sbt-app/src/sbt-test/actions/cross-multi-parser/test
@@ -1,5 +1,5 @@
 > ++2.11.12; compile
 
-> ++ 2.12.19  ; compile;
+> ++ 2.12.20  ; compile;
 
-> ++ 2.12.19 ; compile
+> ++ 2.12.20 ; compile
diff --git a/sbt-app/src/sbt-test/actions/cross-multiproject/build.sbt b/sbt-app/src/sbt-test/actions/cross-multiproject/build.sbt
index 9cdaec371..4f2d58d77 100644
--- a/sbt-app/src/sbt-test/actions/cross-multiproject/build.sbt
+++ b/sbt-app/src/sbt-test/actions/cross-multiproject/build.sbt
@@ -1,4 +1,4 @@
-lazy val scala212 = "2.12.19"
+lazy val scala212 = "2.12.20"
 lazy val scala213 = "2.13.12"
 
 ThisBuild / crossScalaVersions := Seq(scala212, scala213)
diff --git a/sbt-app/src/sbt-test/actions/cross-multiproject/ref/build.sbt b/sbt-app/src/sbt-test/actions/cross-multiproject/ref/build.sbt
index 6fdb53f78..32936b7d0 100644
--- a/sbt-app/src/sbt-test/actions/cross-multiproject/ref/build.sbt
+++ b/sbt-app/src/sbt-test/actions/cross-multiproject/ref/build.sbt
@@ -1,4 +1,4 @@
 lazy val external = (project in file("."))
   .settings(
-    scalaVersion := "2.12.19"
+    scalaVersion := "2.12.20"
   )
diff --git a/sbt-app/src/sbt-test/actions/cross-multiproject/test b/sbt-app/src/sbt-test/actions/cross-multiproject/test
index 2cb5f058e..bef1a492f 100644
--- a/sbt-app/src/sbt-test/actions/cross-multiproject/test
+++ b/sbt-app/src/sbt-test/actions/cross-multiproject/test
@@ -13,7 +13,7 @@ $ exists lib/target/scala-2.13
 
 # test safe switching
 > clean
-> ++ 2.12.19 -v compile
+> ++ 2.12.20 -v compile
 $ exists lib/target/scala-2.12
 -$ exists lib/target/scala-2.13
 $ exists sbt-foo/target/scala-2.12
@@ -31,7 +31,7 @@ $ exists ref/target/scala-2.12
 
 # Test ++ leaves crossScalaVersions unchanged
 > clean
-> ++2.12.19
+> ++2.12.20
 > +extrasProj/compile
 $ exists extras/target/scala-2.13
 $ exists extras/target/scala-2.12
diff --git a/sbt-app/src/sbt-test/actions/cross-strict-aggregation-scala-3/build.sbt b/sbt-app/src/sbt-test/actions/cross-strict-aggregation-scala-3/build.sbt
index 38a5a26fe..919caa213 100644
--- a/sbt-app/src/sbt-test/actions/cross-strict-aggregation-scala-3/build.sbt
+++ b/sbt-app/src/sbt-test/actions/cross-strict-aggregation-scala-3/build.sbt
@@ -1,14 +1,14 @@
-scalaVersion := "2.12.19"
+scalaVersion := "2.12.20"
 
 lazy val core = project
   .settings(
-    crossScalaVersions := Seq("2.12.19", "3.0.2", "3.1.2")
+    crossScalaVersions := Seq("2.12.20", "3.0.2", "3.1.2")
   )
 
 lazy val subproj = project
   .dependsOn(core)
   .settings(
-    crossScalaVersions := Seq("2.12.19", "3.1.2"),
+    crossScalaVersions := Seq("2.12.20", "3.1.2"),
     // a random library compiled against Scala 3.1
     libraryDependencies += "org.http4s" %% "http4s-core" % "0.23.12"
   )
diff --git a/sbt-app/src/sbt-test/actions/cross-strict-aggregation/build.sbt b/sbt-app/src/sbt-test/actions/cross-strict-aggregation/build.sbt
index 68540aadb..d5b43e321 100644
--- a/sbt-app/src/sbt-test/actions/cross-strict-aggregation/build.sbt
+++ b/sbt-app/src/sbt-test/actions/cross-strict-aggregation/build.sbt
@@ -1,4 +1,4 @@
-lazy val scala212 = "2.12.19"
+lazy val scala212 = "2.12.20"
 lazy val scala213 = "2.13.12"
 
 ThisBuild / scalaVersion := scala212
diff --git a/sbt-app/src/sbt-test/actions/doc-file-options/build.sbt b/sbt-app/src/sbt-test/actions/doc-file-options/build.sbt
index 315d77d22..a8b68c48a 100644
--- a/sbt-app/src/sbt-test/actions/doc-file-options/build.sbt
+++ b/sbt-app/src/sbt-test/actions/doc-file-options/build.sbt
@@ -2,7 +2,7 @@ val newContents = "bbbbbbbbb"
 
 val rootContentFile = "root.txt"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/actions/doc/build.sbt b/sbt-app/src/sbt-test/actions/doc/build.sbt
index c74f66a3e..da46ccd46 100644
--- a/sbt-app/src/sbt-test/actions/doc/build.sbt
+++ b/sbt-app/src/sbt-test/actions/doc/build.sbt
@@ -5,8 +5,8 @@ import Parsers._
 lazy val root = (project in file("."))
   .settings(
     crossPaths := false,
-    crossScalaVersions := Seq("2.12.19", "2.13.12"),
-    scalaVersion := "2.12.19",
+    crossScalaVersions := Seq("2.12.20", "2.13.12"),
+    scalaVersion := "2.12.20",
     Compile / doc / scalacOptions += "-Xfatal-warnings",
     commands += Command.command("excludeB") { s =>
       val impl = """val src = (sources in Compile).value; src.filterNot(_.getName.contains("B"))"""
diff --git a/sbt-app/src/sbt-test/actions/generator/build.sbt b/sbt-app/src/sbt-test/actions/generator/build.sbt
index 3fdd6bf4f..3537ae7b0 100644
--- a/sbt-app/src/sbt-test/actions/generator/build.sbt
+++ b/sbt-app/src/sbt-test/actions/generator/build.sbt
@@ -1,6 +1,6 @@
 val buildInfo = taskKey[Seq[File]]("generates the build info")
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/actions/multi-command/build.sbt b/sbt-app/src/sbt-test/actions/multi-command/build.sbt
index 6853cdcfa..606ba1657 100644
--- a/sbt-app/src/sbt-test/actions/multi-command/build.sbt
+++ b/sbt-app/src/sbt-test/actions/multi-command/build.sbt
@@ -19,4 +19,4 @@ val dynamicTask = taskKey[Unit]("dynamic input task")
 
 dynamicTask := { println("not yet et") }
 
-crossScalaVersions := "2.11.12" :: "2.12.19" :: Nil
+crossScalaVersions := "2.11.12" :: "2.12.20" :: Nil
diff --git a/sbt-app/src/sbt-test/actions/multi-command/test b/sbt-app/src/sbt-test/actions/multi-command/test
index 455953b6a..323702a6d 100644
--- a/sbt-app/src/sbt-test/actions/multi-command/test
+++ b/sbt-app/src/sbt-test/actions/multi-command/test
@@ -37,4 +37,4 @@
 
 > ++ 2.11.12 compile; setStringValue bar; checkStringValue bar
 
-> ++2.12.19 compile; setStringValue foo; checkStringValue foo
+> ++2.12.20 compile; setStringValue foo; checkStringValue foo
diff --git a/sbt-app/src/sbt-test/actions/package-delete-target/build.sbt b/sbt-app/src/sbt-test/actions/package-delete-target/build.sbt
index b238d3d93..01163a404 100644
--- a/sbt-app/src/sbt-test/actions/package-delete-target/build.sbt
+++ b/sbt-app/src/sbt-test/actions/package-delete-target/build.sbt
@@ -1,5 +1,5 @@
 lazy val root = (project in file("."))
   .settings(
     name := "delete-target",
-    scalaVersion := "2.12.19"
+    scalaVersion := "2.12.20"
   )
diff --git a/sbt-app/src/sbt-test/actions/remote-cache-semanticdb/build.sbt b/sbt-app/src/sbt-test/actions/remote-cache-semanticdb/build.sbt
index fa9f2fbd7..3153cb66d 100644
--- a/sbt-app/src/sbt-test/actions/remote-cache-semanticdb/build.sbt
+++ b/sbt-app/src/sbt-test/actions/remote-cache-semanticdb/build.sbt
@@ -1,6 +1,6 @@
 name := "my-project"
 
-scalaVersion := "2.12.19"
+scalaVersion := "2.12.20"
 
 semanticdbIncludeInJar := true
 
diff --git a/sbt-app/src/sbt-test/actions/remote-cache/build.sbt b/sbt-app/src/sbt-test/actions/remote-cache/build.sbt
index 2fdefcafc..e99d9a854 100644
--- a/sbt-app/src/sbt-test/actions/remote-cache/build.sbt
+++ b/sbt-app/src/sbt-test/actions/remote-cache/build.sbt
@@ -8,7 +8,7 @@ lazy val CustomArtifact = config("custom-artifact")
 val recordPreviousIterations = taskKey[Unit]("Record previous iterations.")
 val checkIterations = inputKey[Unit]("Verifies the accumulated number of iterations of incremental compilation.")
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 ThisBuild / pushRemoteCacheTo := Some(
   MavenCache("local-cache", (ThisBuild / baseDirectory).value / "r")
 )
diff --git a/sbt-app/src/sbt-test/classloader-cache/akka-actor-system/build.sbt b/sbt-app/src/sbt-test/classloader-cache/akka-actor-system/build.sbt
index b89e34a3f..f2309bb9b 100644
--- a/sbt-app/src/sbt-test/classloader-cache/akka-actor-system/build.sbt
+++ b/sbt-app/src/sbt-test/classloader-cache/akka-actor-system/build.sbt
@@ -2,7 +2,7 @@ ThisBuild / turbo := true
 
 val akkaTest = (project in file(".")).settings(
   name := "akka-test",
-  scalaVersion := "2.12.19",
+  scalaVersion := "2.12.20",
   libraryDependencies ++= Seq(
     "com.typesafe.akka" %% "akka-actor" % "2.5.16",
     "com.lihaoyi" %% "utest" % "0.6.6" % "test"
diff --git a/sbt-app/src/sbt-test/classloader-cache/jni/build.sbt b/sbt-app/src/sbt-test/classloader-cache/jni/build.sbt
index c4c6ce999..abbc5b082 100644
--- a/sbt-app/src/sbt-test/classloader-cache/jni/build.sbt
+++ b/sbt-app/src/sbt-test/classloader-cache/jni/build.sbt
@@ -13,7 +13,7 @@ def wrap(task: InputKey[Unit]): Def.Initialize[Task[Unit]] =
 ThisBuild / turbo := true
 
 val root = (project in file(".")).settings(
-  scalaVersion := "2.12.19",
+  scalaVersion := "2.12.20",
   javacOptions ++= Seq("-source", "1.8", "-target", "1.8", "-h",
   sourceDirectory.value.toPath.resolve("main/native/include").toString),
   libraryDependencies += "com.lihaoyi" %% "utest" % "0.6.6" % "test",
diff --git a/sbt-app/src/sbt-test/classloader-cache/library-mismatch/build.sbt b/sbt-app/src/sbt-test/classloader-cache/library-mismatch/build.sbt
index dec40d399..fb6fcaac0 100644
--- a/sbt-app/src/sbt-test/classloader-cache/library-mismatch/build.sbt
+++ b/sbt-app/src/sbt-test/classloader-cache/library-mismatch/build.sbt
@@ -2,7 +2,7 @@ ThisBuild / turbo := true
 
 val snapshot = (project in file(".")).settings(
   name := "mismatched-libraries",
-  scalaVersion := "2.12.19",
+  scalaVersion := "2.12.20",
   libraryDependencies ++= Seq("com.lihaoyi" %% "utest" % "0.6.6" % "test"),
   testFrameworks := Seq(TestFramework("utest.runner.Framework")),
   resolvers += "Local Maven" at file("libraries/ivy").toURI.toURL.toString,
diff --git a/sbt-app/src/sbt-test/classloader-cache/runtime-layers/build.sbt b/sbt-app/src/sbt-test/classloader-cache/runtime-layers/build.sbt
index d029cd576..215014a80 100644
--- a/sbt-app/src/sbt-test/classloader-cache/runtime-layers/build.sbt
+++ b/sbt-app/src/sbt-test/classloader-cache/runtime-layers/build.sbt
@@ -1,6 +1,6 @@
 val layeringStrategyTest = (project in file(".")).settings(
   name := "layering-strategy-test",
-  scalaVersion := "2.12.19",
+  scalaVersion := "2.12.20",
   organization := "sbt",
   libraryDependencies += "com.typesafe.akka" %% "akka-actor" % "2.5.16",
 )
diff --git a/sbt-app/src/sbt-test/classloader-cache/snapshot/build.sbt b/sbt-app/src/sbt-test/classloader-cache/snapshot/build.sbt
index 2cd09fae6..3087df245 100644
--- a/sbt-app/src/sbt-test/classloader-cache/snapshot/build.sbt
+++ b/sbt-app/src/sbt-test/classloader-cache/snapshot/build.sbt
@@ -9,7 +9,7 @@ ThisBuild / useCoursier := false
 
 val snapshot = (project in file(".")).settings(
   name := "akka-test",
-  scalaVersion := "2.12.19",
+  scalaVersion := "2.12.20",
   libraryDependencies ++= Seq(
     "com.lihaoyi" %% "utest" % "0.6.6" % "test"
   ),
diff --git a/sbt-app/src/sbt-test/classloader-cache/snapshot/libraries/library-1/ivy/sbt/foo-lib_2.12/0.1.0-SNAPSHOT/foo-lib_2.12-0.1.0-SNAPSHOT.pom b/sbt-app/src/sbt-test/classloader-cache/snapshot/libraries/library-1/ivy/sbt/foo-lib_2.12/0.1.0-SNAPSHOT/foo-lib_2.12-0.1.0-SNAPSHOT.pom
index 233c03dbe..f358077c9 100644
--- a/sbt-app/src/sbt-test/classloader-cache/snapshot/libraries/library-1/ivy/sbt/foo-lib_2.12/0.1.0-SNAPSHOT/foo-lib_2.12-0.1.0-SNAPSHOT.pom
+++ b/sbt-app/src/sbt-test/classloader-cache/snapshot/libraries/library-1/ivy/sbt/foo-lib_2.12/0.1.0-SNAPSHOT/foo-lib_2.12-0.1.0-SNAPSHOT.pom
@@ -14,7 +14,7 @@
         <dependency>
             <groupId>org.scala-lang</groupId>
             <artifactId>scala-library</artifactId>
-            <version>2.12.19</version>
+            <version>2.12.20</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/sbt-app/src/sbt-test/classloader-cache/snapshot/libraries/library-2/ivy/sbt/foo-lib_2.12/0.1.0-SNAPSHOT/foo-lib_2.12-0.1.0-SNAPSHOT.pom b/sbt-app/src/sbt-test/classloader-cache/snapshot/libraries/library-2/ivy/sbt/foo-lib_2.12/0.1.0-SNAPSHOT/foo-lib_2.12-0.1.0-SNAPSHOT.pom
index 233c03dbe..f358077c9 100644
--- a/sbt-app/src/sbt-test/classloader-cache/snapshot/libraries/library-2/ivy/sbt/foo-lib_2.12/0.1.0-SNAPSHOT/foo-lib_2.12-0.1.0-SNAPSHOT.pom
+++ b/sbt-app/src/sbt-test/classloader-cache/snapshot/libraries/library-2/ivy/sbt/foo-lib_2.12/0.1.0-SNAPSHOT/foo-lib_2.12-0.1.0-SNAPSHOT.pom
@@ -14,7 +14,7 @@
         <dependency>
             <groupId>org.scala-lang</groupId>
             <artifactId>scala-library</artifactId>
-            <version>2.12.19</version>
+            <version>2.12.20</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/sbt-app/src/sbt-test/classloader-cache/spark/build.sbt b/sbt-app/src/sbt-test/classloader-cache/spark/build.sbt
index 43b6315d5..b105446d8 100644
--- a/sbt-app/src/sbt-test/classloader-cache/spark/build.sbt
+++ b/sbt-app/src/sbt-test/classloader-cache/spark/build.sbt
@@ -2,7 +2,7 @@ name := "Simple Project"
 
 version := "1.0"
 
-scalaVersion := "2.12.19"
+scalaVersion := "2.12.20"
 
 libraryDependencies += "org.apache.spark" %% "spark-sql" % "2.4.3"
 
diff --git a/sbt-app/src/sbt-test/classloader-cache/utest/build.sbt b/sbt-app/src/sbt-test/classloader-cache/utest/build.sbt
index e504b97a7..369160320 100644
--- a/sbt-app/src/sbt-test/classloader-cache/utest/build.sbt
+++ b/sbt-app/src/sbt-test/classloader-cache/utest/build.sbt
@@ -2,7 +2,7 @@ ThisBuild / turbo := true
 
 val utestTest = (project in file(".")).settings(
   name := "utest-test",
-  scalaVersion := "2.12.19",
+  scalaVersion := "2.12.20",
   libraryDependencies ++= Seq(
     "com.lihaoyi" %% "utest" % "0.6.6" % "test"
   ),
diff --git a/sbt-app/src/sbt-test/compiler-project/error-in-invalidated/build.sbt b/sbt-app/src/sbt-test/compiler-project/error-in-invalidated/build.sbt
index ba36bc767..442a697f7 100644
--- a/sbt-app/src/sbt-test/compiler-project/error-in-invalidated/build.sbt
+++ b/sbt-app/src/sbt-test/compiler-project/error-in-invalidated/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file(".")).
   settings(
diff --git a/sbt-app/src/sbt-test/compiler-project/macro-config/build.sbt b/sbt-app/src/sbt-test/compiler-project/macro-config/build.sbt
index f6c50838c..114444c6f 100644
--- a/sbt-app/src/sbt-test/compiler-project/macro-config/build.sbt
+++ b/sbt-app/src/sbt-test/compiler-project/macro-config/build.sbt
@@ -5,7 +5,7 @@ val Macro = config("macro").hide.extend(Compile)
 
 lazy val root = (project in file("."))
   .settings(
-    scalaVersion := "2.12.19",
+    scalaVersion := "2.12.20",
 
     // Adds a "macro" configuration for macro dependencies.
     ivyConfigurations.value += Macro,
diff --git a/sbt-app/src/sbt-test/compiler-project/no-bootclasspath/test b/sbt-app/src/sbt-test/compiler-project/no-bootclasspath/test
index a62a34698..59b1e34b3 100644
--- a/sbt-app/src/sbt-test/compiler-project/no-bootclasspath/test
+++ b/sbt-app/src/sbt-test/compiler-project/no-bootclasspath/test
@@ -1,4 +1,4 @@
 > set scalaVersion := "2.13.12"
 > check213
-> set scalaVersion := "2.12.18"
+> set scalaVersion := "2.12.20"
 > check212
diff --git a/sbt-app/src/sbt-test/compiler-project/run-test/build.sbt b/sbt-app/src/sbt-test/compiler-project/run-test/build.sbt
index b13d3908c..60bfe1f86 100644
--- a/sbt-app/src/sbt-test/compiler-project/run-test/build.sbt
+++ b/sbt-app/src/sbt-test/compiler-project/run-test/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 libraryDependencies ++= Seq(
 	"com.novocode" % "junit-interface" % "0.5" % Test,
diff --git a/sbt-app/src/sbt-test/compiler-project/separate-analysis-per-scala/build.sbt b/sbt-app/src/sbt-test/compiler-project/separate-analysis-per-scala/build.sbt
index 5b50dc390..bab8177e6 100644
--- a/sbt-app/src/sbt-test/compiler-project/separate-analysis-per-scala/build.sbt
+++ b/sbt-app/src/sbt-test/compiler-project/separate-analysis-per-scala/build.sbt
@@ -1,4 +1,4 @@
-lazy val scala212 = "2.12.19"
+lazy val scala212 = "2.12.20"
 lazy val scala213 = "2.13.12"
 ThisBuild / scalaVersion := scala212
 
diff --git a/sbt-app/src/sbt-test/console/project-compiler-bridge/project/build.sbt b/sbt-app/src/sbt-test/console/project-compiler-bridge/project/build.sbt
index 8f5047976..76f36acc2 100644
--- a/sbt-app/src/sbt-test/console/project-compiler-bridge/project/build.sbt
+++ b/sbt-app/src/sbt-test/console/project-compiler-bridge/project/build.sbt
@@ -1 +1 @@
-scalaVersion := "2.12.19"
+scalaVersion := "2.12.20"
diff --git a/sbt-app/src/sbt-test/dependency-graph/cachedResolution/build.sbt b/sbt-app/src/sbt-test/dependency-graph/cachedResolution/build.sbt
index 29548c20e..4ecda4a16 100644
--- a/sbt-app/src/sbt-test/dependency-graph/cachedResolution/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-graph/cachedResolution/build.sbt
@@ -1,4 +1,4 @@
-scalaVersion := "2.12.19"
+scalaVersion := "2.12.20"
 
 libraryDependencies += "org.slf4j" % "slf4j-api" % "1.7.28"
 updateOptions := updateOptions.value.withCachedResolution(true)
diff --git a/sbt-app/src/sbt-test/dependency-graph/ignoreScalaLibrary/build.sbt b/sbt-app/src/sbt-test/dependency-graph/ignoreScalaLibrary/build.sbt
index bc11b4a40..4593aca81 100644
--- a/sbt-app/src/sbt-test/dependency-graph/ignoreScalaLibrary/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-graph/ignoreScalaLibrary/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 libraryDependencies ++= Seq(
   "org.slf4j" % "slf4j-api" % "1.7.2",
diff --git a/sbt-app/src/sbt-test/dependency-graph/toFileSubTask/build.sbt b/sbt-app/src/sbt-test/dependency-graph/toFileSubTask/build.sbt
index cfb295484..66a6c1bff 100644
--- a/sbt-app/src/sbt-test/dependency-graph/toFileSubTask/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-graph/toFileSubTask/build.sbt
@@ -1,5 +1,5 @@
 // ThisBuild / useCoursier := false
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 ThisBuild / organization := "org.example"
 ThisBuild / version := "0.1"
 
diff --git a/sbt-app/src/sbt-test/dependency-management/artifact/build.sbt b/sbt-app/src/sbt-test/dependency-management/artifact/build.sbt
index c4493475e..077b2a06b 100644
--- a/sbt-app/src/sbt-test/dependency-management/artifact/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/artifact/build.sbt
@@ -6,7 +6,7 @@ lazy val check = taskKey[Unit]("")
 lazy val checkArtifact = taskKey[Unit]("")
 
 ThisBuild / useCoursier := false
-ThisBuild / scalaVersion     := "2.12.19"
+ThisBuild / scalaVersion     := "2.12.20"
 ThisBuild / version          := "0.1.0-SNAPSHOT"
 ThisBuild / organization     := "com.example"
 ThisBuild / organizationName := "example"
diff --git a/sbt-app/src/sbt-test/dependency-management/cache-classifiers/multi.sbt b/sbt-app/src/sbt-test/dependency-management/cache-classifiers/multi.sbt
index 2caee109a..f84a40e2b 100644
--- a/sbt-app/src/sbt-test/dependency-management/cache-classifiers/multi.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/cache-classifiers/multi.sbt
@@ -1,6 +1,6 @@
 import xsbti.AppConfiguration
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 // TTL of Coursier is 24h
 ThisBuild / useCoursier := false
diff --git a/sbt-app/src/sbt-test/dependency-management/cached-resolution-interproj/multi.sbt b/sbt-app/src/sbt-test/dependency-management/cached-resolution-interproj/multi.sbt
index b6d099632..2ea6028a3 100644
--- a/sbt-app/src/sbt-test/dependency-management/cached-resolution-interproj/multi.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/cached-resolution-interproj/multi.sbt
@@ -3,7 +3,7 @@ lazy val check = taskKey[Unit]("Runs the check")
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
 val junit = "junit" % "junit" % "4.13.1"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 ThisBuild / csrCacheDirectory := (ThisBuild / baseDirectory).value / "coursier-cache"
 
 def commonSettings: Seq[Def.Setting[_]] =
diff --git a/sbt-app/src/sbt-test/dependency-management/compiler-bridge-binary/build.sbt b/sbt-app/src/sbt-test/dependency-management/compiler-bridge-binary/build.sbt
index 59aad4118..f9cf8fddd 100644
--- a/sbt-app/src/sbt-test/dependency-management/compiler-bridge-binary/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/compiler-bridge-binary/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val check = taskKey[Unit]("")
 
diff --git a/sbt-app/src/sbt-test/dependency-management/conflict-coursier/build.sbt b/sbt-app/src/sbt-test/dependency-management/conflict-coursier/build.sbt
index 436ed6e36..19d25ed0b 100644
--- a/sbt-app/src/sbt-test/dependency-management/conflict-coursier/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/conflict-coursier/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 libraryDependencies ++= List(
   "org.webjars.npm" % "randomatic" % "1.1.7",
   "org.webjars.npm" % "is-odd"     % "2.0.0",
diff --git a/sbt-app/src/sbt-test/dependency-management/ext-pom-classifier/build.sbt b/sbt-app/src/sbt-test/dependency-management/ext-pom-classifier/build.sbt
index 00bb5f7d5..9ac56bac5 100644
--- a/sbt-app/src/sbt-test/dependency-management/ext-pom-classifier/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/ext-pom-classifier/build.sbt
@@ -2,6 +2,6 @@ ThisBuild / useCoursier := false
 
 lazy val root = (project in file("."))
   .settings(
-    scalaVersion := "2.12.19",
+    scalaVersion := "2.12.20",
     externalPom()
   )
diff --git a/sbt-app/src/sbt-test/dependency-management/force-update-period/build.sbt b/sbt-app/src/sbt-test/dependency-management/force-update-period/build.sbt
index 23d58d7d1..a6a466465 100644
--- a/sbt-app/src/sbt-test/dependency-management/force-update-period/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/force-update-period/build.sbt
@@ -1,7 +1,7 @@
 ThisBuild / useCoursier := false
 
 name := "force-update-period"
-scalaVersion := "2.12.18"
+scalaVersion := "2.12.20"
 libraryDependencies += "log4j" % "log4j" % "1.2.16" % "compile"
 autoScalaLibrary := false
 
diff --git a/sbt-app/src/sbt-test/dependency-management/global-plugins/build.sbt b/sbt-app/src/sbt-test/dependency-management/global-plugins/build.sbt
index 8f5047976..76f36acc2 100644
--- a/sbt-app/src/sbt-test/dependency-management/global-plugins/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/global-plugins/build.sbt
@@ -1 +1 @@
-scalaVersion := "2.12.19"
+scalaVersion := "2.12.20"
diff --git a/sbt-app/src/sbt-test/dependency-management/snapshot-local/build.sbt b/sbt-app/src/sbt-test/dependency-management/snapshot-local/build.sbt
index 5b887b7d6..15ac28821 100644
--- a/sbt-app/src/sbt-test/dependency-management/snapshot-local/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/snapshot-local/build.sbt
@@ -1,5 +1,5 @@
 ThisBuild / organization := "com.example"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 ThisBuild / csrCacheDirectory := (ThisBuild / baseDirectory).value / "coursier-cache"
 
 def customIvyPaths: Seq[Def.Setting[_]] = Seq(
diff --git a/sbt-app/src/sbt-test/dependency-management/snapshot-resolution/build.sbt b/sbt-app/src/sbt-test/dependency-management/snapshot-resolution/build.sbt
index 4373ff66d..a129fcdf3 100644
--- a/sbt-app/src/sbt-test/dependency-management/snapshot-resolution/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/snapshot-resolution/build.sbt
@@ -1,5 +1,5 @@
 ThisBuild / organization := "com.example"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 // TTL is 24h so we can't detect the change
 ThisBuild / useCoursier := false
diff --git a/sbt-app/src/sbt-test/java/cross/build.sbt b/sbt-app/src/sbt-test/java/cross/build.sbt
index b5f39d15e..cbb55bd7d 100644
--- a/sbt-app/src/sbt-test/java/cross/build.sbt
+++ b/sbt-app/src/sbt-test/java/cross/build.sbt
@@ -4,7 +4,7 @@ val check = inputKey[Unit]("Runs the check")
 
 lazy val root = (project in file("."))
   .settings(
-    ThisBuild / scalaVersion := "2.12.19",
+    ThisBuild / scalaVersion := "2.12.20",
     crossJavaVersions := List("1.8"),
 
     // read out.txt and see if it starts with the passed in number
diff --git a/sbt-app/src/sbt-test/java/cross/changes/build.sbt b/sbt-app/src/sbt-test/java/cross/changes/build.sbt
index 9facfdb8d..2d09de654 100644
--- a/sbt-app/src/sbt-test/java/cross/changes/build.sbt
+++ b/sbt-app/src/sbt-test/java/cross/changes/build.sbt
@@ -4,7 +4,7 @@ val check = inputKey[Unit]("Runs the check")
 
 lazy val root = (project in file("."))
   .settings(
-    ThisBuild / scalaVersion := "2.12.19",
+    ThisBuild / scalaVersion := "2.12.20",
     crossJavaVersions := List("1.8", "10"),
 
     // read out.txt and see if it starts with the passed in number
diff --git a/sbt-app/src/sbt-test/plugins/hydra/build.sbt b/sbt-app/src/sbt-test/plugins/hydra/build.sbt
index efc3b0a27..9ee405caa 100644
--- a/sbt-app/src/sbt-test/plugins/hydra/build.sbt
+++ b/sbt-app/src/sbt-test/plugins/hydra/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val check = taskKey[Unit]("")
 
diff --git a/sbt-app/src/sbt-test/plugins/sbt-native-packager/build.sbt b/sbt-app/src/sbt-test/plugins/sbt-native-packager/build.sbt
index 202a48a91..7783ed396 100644
--- a/sbt-app/src/sbt-test/plugins/sbt-native-packager/build.sbt
+++ b/sbt-app/src/sbt-test/plugins/sbt-native-packager/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 name := "hello"
 enablePlugins(JavaAppPackaging)
diff --git a/sbt-app/src/sbt-test/plugins/unidoc/build.sbt b/sbt-app/src/sbt-test/plugins/unidoc/build.sbt
index 2abb1992d..afa976179 100644
--- a/sbt-app/src/sbt-test/plugins/unidoc/build.sbt
+++ b/sbt-app/src/sbt-test/plugins/unidoc/build.sbt
@@ -1,4 +1,4 @@
-scalaVersion := "2.12.19"
+scalaVersion := "2.12.20"
 scalacOptions += "-Xfatal-warnings" // required for the test
 
 enablePlugins(ScalaUnidocPlugin)
diff --git a/sbt-app/src/sbt-test/project/aggregate/projA/build.sbt b/sbt-app/src/sbt-test/project/aggregate/projA/build.sbt
index b12345076..af30eb1d0 100644
--- a/sbt-app/src/sbt-test/project/aggregate/projA/build.sbt
+++ b/sbt-app/src/sbt-test/project/aggregate/projA/build.sbt
@@ -1,3 +1,3 @@
 name := "projA"
 
-scalaVersion := "2.12.19"
+scalaVersion := "2.12.20"
diff --git a/sbt-app/src/sbt-test/project/cross-plugins-defaults/build.sbt b/sbt-app/src/sbt-test/project/cross-plugins-defaults/build.sbt
index 9ea6db60d..d0b8f1912 100644
--- a/sbt-app/src/sbt-test/project/cross-plugins-defaults/build.sbt
+++ b/sbt-app/src/sbt-test/project/cross-plugins-defaults/build.sbt
@@ -1,7 +1,7 @@
 val baseSbt = "1."
 
-val buildCrossList = List("2.10.7", "2.11.12", "2.12.19")
-scalaVersion in ThisBuild := "2.12.19"
+val buildCrossList = List("2.10.7", "2.11.12", "2.12.20")
+scalaVersion in ThisBuild := "2.12.20"
 crossScalaVersions in ThisBuild := buildCrossList
 
 addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.7.0")
diff --git a/sbt-app/src/sbt-test/project/flatten/build.sbt b/sbt-app/src/sbt-test/project/flatten/build.sbt
index 8f8e73e64..518c06e19 100644
--- a/sbt-app/src/sbt-test/project/flatten/build.sbt
+++ b/sbt-app/src/sbt-test/project/flatten/build.sbt
@@ -1,6 +1,6 @@
 val unpackage = TaskKey[Unit]("unpackage")
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/project/internal-tracking/build.sbt b/sbt-app/src/sbt-test/project/internal-tracking/build.sbt
index 711d9f88a..c34f007b5 100644
--- a/sbt-app/src/sbt-test/project/internal-tracking/build.sbt
+++ b/sbt-app/src/sbt-test/project/internal-tracking/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 ThisBuild / trackInternalDependencies := TrackLevel.NoTracking
 
 lazy val root = (project in file("."))
diff --git a/sbt-app/src/sbt-test/project/sbt-plugin/build.sbt b/sbt-app/src/sbt-test/project/sbt-plugin/build.sbt
index 681686b5a..3b1ec5328 100644
--- a/sbt-app/src/sbt-test/project/sbt-plugin/build.sbt
+++ b/sbt-app/src/sbt-test/project/sbt-plugin/build.sbt
@@ -1,6 +1,6 @@
 lazy val root = project.in(file("."))
   .enablePlugins(SbtPlugin)
   .settings(
-    scalaVersion := "2.12.19",
+    scalaVersion := "2.12.20",
     scalacOptions ++= Seq("-Xfatal-warnings", "-Xlint")
   )
diff --git a/sbt-app/src/sbt-test/project/sbt-plugin/changes/oldSbtPlugin.sbt b/sbt-app/src/sbt-test/project/sbt-plugin/changes/oldSbtPlugin.sbt
index 7b654c196..1738ee9a5 100644
--- a/sbt-app/src/sbt-test/project/sbt-plugin/changes/oldSbtPlugin.sbt
+++ b/sbt-app/src/sbt-test/project/sbt-plugin/changes/oldSbtPlugin.sbt
@@ -1,6 +1,6 @@
 lazy val root = project.in(file("."))
   .settings(
-    scalaVersion := "2.12.19",
+    scalaVersion := "2.12.20",
     sbtPlugin := true,
     scalacOptions ++= Seq("-Xfatal-warnings", "-Xlint")
   )
diff --git a/sbt-app/src/sbt-test/project/semanticdb/build.sbt b/sbt-app/src/sbt-test/project/semanticdb/build.sbt
index fcc03b2ec..03ad56d26 100644
--- a/sbt-app/src/sbt-test/project/semanticdb/build.sbt
+++ b/sbt-app/src/sbt-test/project/semanticdb/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 ThisBuild / semanticdbEnabled := true
 ThisBuild / semanticdbIncludeInJar := true
 
diff --git a/sbt-app/src/sbt-test/project/unified/build.sbt b/sbt-app/src/sbt-test/project/unified/build.sbt
index 18ae6cfce..cbb558572 100644
--- a/sbt-app/src/sbt-test/project/unified/build.sbt
+++ b/sbt-app/src/sbt-test/project/unified/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 import sbt.internal.CommandStrings.{ inspectBrief, inspectDetailed }
 import sbt.internal.Inspect
diff --git a/sbt-app/src/sbt-test/run/fork-loader/build.sbt b/sbt-app/src/sbt-test/run/fork-loader/build.sbt
index c5b8530f1..b440e9f31 100644
--- a/sbt-app/src/sbt-test/run/fork-loader/build.sbt
+++ b/sbt-app/src/sbt-test/run/fork-loader/build.sbt
@@ -1,6 +1,6 @@
 val scalcheck = "org.scalacheck" %% "scalacheck" % "1.14.0"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/source-dependencies/binary/build.sbt b/sbt-app/src/sbt-test/source-dependencies/binary/build.sbt
index 4dc26da4a..dbf8e8610 100644
--- a/sbt-app/src/sbt-test/source-dependencies/binary/build.sbt
+++ b/sbt-app/src/sbt-test/source-dependencies/binary/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val dep = project
 
diff --git a/sbt-app/src/sbt-test/source-dependencies/constants/test b/sbt-app/src/sbt-test/source-dependencies/constants/test
index ff8815d85..8f027dbf2 100644
--- a/sbt-app/src/sbt-test/source-dependencies/constants/test
+++ b/sbt-app/src/sbt-test/source-dependencies/constants/test
@@ -1,4 +1,4 @@
-> ++2.12.19!
+> ++2.12.20!
 
 $ copy-file changes/B.scala B.scala
 
diff --git a/sbt-app/src/sbt-test/source-dependencies/cross-source/test b/sbt-app/src/sbt-test/source-dependencies/cross-source/test
index 53348a66c..21b560de7 100644
--- a/sbt-app/src/sbt-test/source-dependencies/cross-source/test
+++ b/sbt-app/src/sbt-test/source-dependencies/cross-source/test
@@ -1,3 +1,3 @@
 # A.scala needs B.scala, it would be in source list
-> ++2.12.19!
+> ++2.12.20!
 > compile
diff --git a/sbt-app/src/sbt-test/source-dependencies/macro-annotation/build.sbt b/sbt-app/src/sbt-test/source-dependencies/macro-annotation/build.sbt
index 42ffe9799..45d6045fe 100644
--- a/sbt-app/src/sbt-test/source-dependencies/macro-annotation/build.sbt
+++ b/sbt-app/src/sbt-test/source-dependencies/macro-annotation/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 val paradiseVersion = "2.1.1"
 val commonSettings = Seq(
diff --git a/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep-nested/build.sbt b/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep-nested/build.sbt
index 4e0809123..cd1f0fda4 100644
--- a/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep-nested/build.sbt
+++ b/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep-nested/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 val defaultSettings = Seq(
   libraryDependencies += scalaVersion("org.scala-lang" % "scala-reflect" % _ ).value
diff --git a/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep-stackoverflow/build.sbt b/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep-stackoverflow/build.sbt
index 4e0809123..cd1f0fda4 100644
--- a/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep-stackoverflow/build.sbt
+++ b/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep-stackoverflow/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 val defaultSettings = Seq(
   libraryDependencies += scalaVersion("org.scala-lang" % "scala-reflect" % _ ).value
diff --git a/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep/build.sbt b/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep/build.sbt
index 4e0809123..cd1f0fda4 100644
--- a/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep/build.sbt
+++ b/sbt-app/src/sbt-test/source-dependencies/macro-arg-dep/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 val defaultSettings = Seq(
   libraryDependencies += scalaVersion("org.scala-lang" % "scala-reflect" % _ ).value
diff --git a/sbt-app/src/sbt-test/source-dependencies/macro/build.sbt b/sbt-app/src/sbt-test/source-dependencies/macro/build.sbt
index 4e0809123..cd1f0fda4 100644
--- a/sbt-app/src/sbt-test/source-dependencies/macro/build.sbt
+++ b/sbt-app/src/sbt-test/source-dependencies/macro/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 val defaultSettings = Seq(
   libraryDependencies += scalaVersion("org.scala-lang" % "scala-reflect" % _ ).value
diff --git a/sbt-app/src/sbt-test/tests/arguments/build.sbt b/sbt-app/src/sbt-test/tests/arguments/build.sbt
index 83d73ec79..93cde9171 100644
--- a/sbt-app/src/sbt-test/tests/arguments/build.sbt
+++ b/sbt-app/src/sbt-test/tests/arguments/build.sbt
@@ -1,6 +1,6 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 val foo = settingKey[Seq[String]]("foo")
 val checkFoo = inputKey[Unit]("check contents of foo")
diff --git a/sbt-app/src/sbt-test/tests/do-not-discover/build.sbt b/sbt-app/src/sbt-test/tests/do-not-discover/build.sbt
index 59179e413..d05f23430 100644
--- a/sbt-app/src/sbt-test/tests/do-not-discover/build.sbt
+++ b/sbt-app/src/sbt-test/tests/do-not-discover/build.sbt
@@ -1,6 +1,6 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/tests/done/build.sbt b/sbt-app/src/sbt-test/tests/done/build.sbt
index 59179e413..d05f23430 100644
--- a/sbt-app/src/sbt-test/tests/done/build.sbt
+++ b/sbt-app/src/sbt-test/tests/done/build.sbt
@@ -1,6 +1,6 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/tests/filter-runners/build.sbt b/sbt-app/src/sbt-test/tests/filter-runners/build.sbt
index bc17f844d..e1aba618a 100644
--- a/sbt-app/src/sbt-test/tests/filter-runners/build.sbt
+++ b/sbt-app/src/sbt-test/tests/filter-runners/build.sbt
@@ -1,7 +1,7 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.2.2"
 val munit = "org.scalameta" %% "munit" % "0.7.22"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 libraryDependencies += scalatest % Test
 libraryDependencies += munit % Test
diff --git a/sbt-app/src/sbt-test/tests/fork-async/build.sbt b/sbt-app/src/sbt-test/tests/fork-async/build.sbt
index 1f765fdb1..93256098a 100644
--- a/sbt-app/src/sbt-test/tests/fork-async/build.sbt
+++ b/sbt-app/src/sbt-test/tests/fork-async/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/tests/fork-parallel/build.sbt b/sbt-app/src/sbt-test/tests/fork-parallel/build.sbt
index f6f82d54a..68c177d33 100644
--- a/sbt-app/src/sbt-test/tests/fork-parallel/build.sbt
+++ b/sbt-app/src/sbt-test/tests/fork-parallel/build.sbt
@@ -1,7 +1,7 @@
 import Tests._
 import Defaults._
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 val check = taskKey[Unit]("Check that tests are executed in parallel")
 
 lazy val root = (project in file("."))
diff --git a/sbt-app/src/sbt-test/tests/fork-test-group-parallel-custom-tags/build.sbt b/sbt-app/src/sbt-test/tests/fork-test-group-parallel-custom-tags/build.sbt
index 059a130a2..d1e4492cf 100644
--- a/sbt-app/src/sbt-test/tests/fork-test-group-parallel-custom-tags/build.sbt
+++ b/sbt-app/src/sbt-test/tests/fork-test-group-parallel-custom-tags/build.sbt
@@ -1,5 +1,5 @@
 val specs = "org.specs2" %% "specs2-core" % "4.3.4"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 val TestATypeTag = Tags.Tag("TestA")
 val TestBTypeTag = Tags.Tag("TestB")
diff --git a/sbt-app/src/sbt-test/tests/fork-test-group-parallel/build.sbt b/sbt-app/src/sbt-test/tests/fork-test-group-parallel/build.sbt
index a6b2aaf9d..50f793d22 100644
--- a/sbt-app/src/sbt-test/tests/fork-test-group-parallel/build.sbt
+++ b/sbt-app/src/sbt-test/tests/fork-test-group-parallel/build.sbt
@@ -1,5 +1,5 @@
 val specs = "org.specs2" %% "specs2-core" % "4.3.4"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 Global / concurrentRestrictions := Seq(Tags.limitAll(4))
 libraryDependencies += specs % Test
diff --git a/sbt-app/src/sbt-test/tests/fork-uncaught2/build.sbt b/sbt-app/src/sbt-test/tests/fork-uncaught2/build.sbt
index 60ad26140..f13c4fbe6 100644
--- a/sbt-app/src/sbt-test/tests/fork-uncaught2/build.sbt
+++ b/sbt-app/src/sbt-test/tests/fork-uncaught2/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 libraryDependencies += "org.scala-sbt" % "test-interface" % "1.0"
 
diff --git a/sbt-app/src/sbt-test/tests/fork/build.sbt b/sbt-app/src/sbt-test/tests/fork/build.sbt
index 8722b742d..65f33a577 100644
--- a/sbt-app/src/sbt-test/tests/fork/build.sbt
+++ b/sbt-app/src/sbt-test/tests/fork/build.sbt
@@ -11,7 +11,7 @@ val scalaxml = "org.scala-lang.modules" %% "scala-xml" % "1.1.1"
 def groupId(idx: Int) = "group_" + (idx + 1)
 def groupPrefix(idx: Int) = groupId(idx) + "_file_"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 ThisBuild / organization := "org.example"
 
 lazy val root = (project in file("."))
diff --git a/sbt-app/src/sbt-test/tests/fork2/build.sbt b/sbt-app/src/sbt-test/tests/fork2/build.sbt
index 6c272bbde..e70d963e1 100644
--- a/sbt-app/src/sbt-test/tests/fork2/build.sbt
+++ b/sbt-app/src/sbt-test/tests/fork2/build.sbt
@@ -1,6 +1,6 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 fork := true
 libraryDependencies += scalatest % Test
diff --git a/sbt-app/src/sbt-test/tests/it/build.sbt b/sbt-app/src/sbt-test/tests/it/build.sbt
index f784e70a1..c3c234773 100644
--- a/sbt-app/src/sbt-test/tests/it/build.sbt
+++ b/sbt-app/src/sbt-test/tests/it/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 val specs = "org.specs2" %% "specs2-core" % "4.3.4"
 
diff --git a/sbt-app/src/sbt-test/tests/junit-xml-report/build.sbt b/sbt-app/src/sbt-test/tests/junit-xml-report/build.sbt
index 5da856697..4d87f2ca2 100644
--- a/sbt-app/src/sbt-test/tests/junit-xml-report/build.sbt
+++ b/sbt-app/src/sbt-test/tests/junit-xml-report/build.sbt
@@ -14,7 +14,7 @@ val nestedSuitesReportFile = "target/test-reports/TEST-my.scalatest.MyNestedSuit
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
 val junitinterface = "com.novocode" % "junit-interface" % "0.11"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file(".")).
   settings(
diff --git a/sbt-app/src/sbt-test/tests/munit/build.sbt b/sbt-app/src/sbt-test/tests/munit/build.sbt
index bc719880c..e04350cbd 100644
--- a/sbt-app/src/sbt-test/tests/munit/build.sbt
+++ b/sbt-app/src/sbt-test/tests/munit/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val munit = "org.scalameta" %% "munit" % "0.7.22"
 
diff --git a/sbt-app/src/sbt-test/tests/nested-inproc-par/build.sbt b/sbt-app/src/sbt-test/tests/nested-inproc-par/build.sbt
index 5cbfb735e..68ae9ccf7 100644
--- a/sbt-app/src/sbt-test/tests/nested-inproc-par/build.sbt
+++ b/sbt-app/src/sbt-test/tests/nested-inproc-par/build.sbt
@@ -1,6 +1,6 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/tests/nested-inproc-seq/build.sbt b/sbt-app/src/sbt-test/tests/nested-inproc-seq/build.sbt
index a03155c8a..20bdacb98 100644
--- a/sbt-app/src/sbt-test/tests/nested-inproc-seq/build.sbt
+++ b/sbt-app/src/sbt-test/tests/nested-inproc-seq/build.sbt
@@ -1,6 +1,6 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/tests/nested-subproc/build.sbt b/sbt-app/src/sbt-test/tests/nested-subproc/build.sbt
index 7b8de3010..bb06cb73f 100644
--- a/sbt-app/src/sbt-test/tests/nested-subproc/build.sbt
+++ b/sbt-app/src/sbt-test/tests/nested-subproc/build.sbt
@@ -1,7 +1,7 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
 val scalaxml = "org.scala-lang.modules" %% "scala-xml" % "1.1.1"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/tests/nested-tests/build.sbt b/sbt-app/src/sbt-test/tests/nested-tests/build.sbt
index 6ae21f33f..52030f3c9 100644
--- a/sbt-app/src/sbt-test/tests/nested-tests/build.sbt
+++ b/sbt-app/src/sbt-test/tests/nested-tests/build.sbt
@@ -1,6 +1,6 @@
 val scalcheck = "org.scalacheck" %% "scalacheck" % "1.14.0"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 ThisBuild / version := "0.0.1" 
 ThisBuild / organization := "org.catastrophe"
 
diff --git a/sbt-app/src/sbt-test/tests/one-class-multi-framework/build.sbt b/sbt-app/src/sbt-test/tests/one-class-multi-framework/build.sbt
index 3fa69b6cf..127d21076 100644
--- a/sbt-app/src/sbt-test/tests/one-class-multi-framework/build.sbt
+++ b/sbt-app/src/sbt-test/tests/one-class-multi-framework/build.sbt
@@ -1,5 +1,5 @@
 val specsJunit = "org.specs2" %% "specs2-junit" % "4.3.4"
 val junitinterface = "com.novocode" % "junit-interface" % "0.11"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 libraryDependencies += junitinterface % Test
 libraryDependencies += specsJunit % Test
diff --git a/sbt-app/src/sbt-test/tests/order/build.sbt b/sbt-app/src/sbt-test/tests/order/build.sbt
index fefa56d8e..10db9515d 100644
--- a/sbt-app/src/sbt-test/tests/order/build.sbt
+++ b/sbt-app/src/sbt-test/tests/order/build.sbt
@@ -1,5 +1,5 @@
 val scalcheck = "org.scalacheck" %% "scalacheck" % "1.14.0"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 Test / parallelExecution := false
 libraryDependencies += scalcheck % Test
diff --git a/sbt-app/src/sbt-test/tests/resources/build.sbt b/sbt-app/src/sbt-test/tests/resources/build.sbt
index e6997605a..5d64d55f4 100644
--- a/sbt-app/src/sbt-test/tests/resources/build.sbt
+++ b/sbt-app/src/sbt-test/tests/resources/build.sbt
@@ -1,3 +1,3 @@
 val specs = "org.specs2" %% "specs2-core" % "4.3.4"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 libraryDependencies += specs % Test
diff --git a/sbt-app/src/sbt-test/tests/scala-instance-classloader/build.sbt b/sbt-app/src/sbt-test/tests/scala-instance-classloader/build.sbt
index 44c188f44..dcdf547a9 100644
--- a/sbt-app/src/sbt-test/tests/scala-instance-classloader/build.sbt
+++ b/sbt-app/src/sbt-test/tests/scala-instance-classloader/build.sbt
@@ -3,7 +3,7 @@ import sbt.internal.inc.ScalaInstance
 lazy val OtherScala = config("other-scala").hide
 lazy val junitinterface = "com.novocode" % "junit-interface" % "0.11"
 lazy val akkaActor = "com.typesafe.akka" %% "akka-actor" % "2.5.17"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .configs(OtherScala)
diff --git a/sbt-app/src/sbt-test/tests/serial/build.sbt b/sbt-app/src/sbt-test/tests/serial/build.sbt
index effd2fa66..2d7abec58 100644
--- a/sbt-app/src/sbt-test/tests/serial/build.sbt
+++ b/sbt-app/src/sbt-test/tests/serial/build.sbt
@@ -1,6 +1,6 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 ThisBuild / organization := "com.example"
 ThisBuild / version      := "0.0.1-SNAPSHOT"
 
diff --git a/sbt-app/src/sbt-test/tests/setup-cleanup/base.sbt b/sbt-app/src/sbt-test/tests/setup-cleanup/base.sbt
index ea0abf0e5..d5d9b2552 100644
--- a/sbt-app/src/sbt-test/tests/setup-cleanup/base.sbt
+++ b/sbt-app/src/sbt-test/tests/setup-cleanup/base.sbt
@@ -1,3 +1,3 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 libraryDependencies += scalatest
diff --git a/sbt-app/src/sbt-test/tests/single-runner/build.sbt b/sbt-app/src/sbt-test/tests/single-runner/build.sbt
index 69ff2b711..0547b7465 100644
--- a/sbt-app/src/sbt-test/tests/single-runner/build.sbt
+++ b/sbt-app/src/sbt-test/tests/single-runner/build.sbt
@@ -1,4 +1,4 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 libraryDependencies += scalatest
 Test / testOptions += Tests.Argument("-C", "custom.CustomReporter")
diff --git a/sbt-app/src/sbt-test/tests/specs-run/build.sbt b/sbt-app/src/sbt-test/tests/specs-run/build.sbt
index 7b2f632b6..47774f80b 100644
--- a/sbt-app/src/sbt-test/tests/specs-run/build.sbt
+++ b/sbt-app/src/sbt-test/tests/specs-run/build.sbt
@@ -1,4 +1,4 @@
 val specs = "org.specs2" %% "specs2-core" % "4.3.4"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 libraryDependencies += specs % Test
diff --git a/sbt-app/src/sbt-test/tests/t543/build.sbt b/sbt-app/src/sbt-test/tests/t543/build.sbt
index 3f885106a..944e65e4e 100644
--- a/sbt-app/src/sbt-test/tests/t543/build.sbt
+++ b/sbt-app/src/sbt-test/tests/t543/build.sbt
@@ -7,7 +7,7 @@ val check = TaskKey[Unit]("check", "Check correct error has been returned.")
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
 val scalaxml = "org.scala-lang.modules" %% "scala-xml" % "1.1.1"
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file(".")).
   settings(
diff --git a/sbt-app/src/sbt-test/tests/task/build.sbt b/sbt-app/src/sbt-test/tests/task/build.sbt
index 69ff2b711..0547b7465 100644
--- a/sbt-app/src/sbt-test/tests/task/build.sbt
+++ b/sbt-app/src/sbt-test/tests/task/build.sbt
@@ -1,4 +1,4 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 libraryDependencies += scalatest
 Test / testOptions += Tests.Argument("-C", "custom.CustomReporter")
diff --git a/sbt-app/src/sbt-test/tests/test-exclude/build.sbt b/sbt-app/src/sbt-test/tests/test-exclude/build.sbt
index c05ef3c0d..391cac0ae 100644
--- a/sbt-app/src/sbt-test/tests/test-exclude/build.sbt
+++ b/sbt-app/src/sbt-test/tests/test-exclude/build.sbt
@@ -1,5 +1,5 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/tests/test-quick/build.sbt b/sbt-app/src/sbt-test/tests/test-quick/build.sbt
index c05ef3c0d..391cac0ae 100644
--- a/sbt-app/src/sbt-test/tests/test-quick/build.sbt
+++ b/sbt-app/src/sbt-test/tests/test-quick/build.sbt
@@ -1,5 +1,5 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/sbt-app/src/sbt-test/watch/commands/build.sbt b/sbt-app/src/sbt-test/watch/commands/build.sbt
index b197a0395..1250a8567 100644
--- a/sbt-app/src/sbt-test/watch/commands/build.sbt
+++ b/sbt-app/src/sbt-test/watch/commands/build.sbt
@@ -53,4 +53,4 @@ expectFailure / watchOnFileInputEvent := { (_, e) =>
 }
 
 
-crossScalaVersions := Seq("2.11.12", "2.12.19")
+crossScalaVersions := Seq("2.11.12", "2.12.20")
diff --git a/server-test/src/server-test/response/build.sbt b/server-test/src/server-test/response/build.sbt
index f3a2fac46..588466333 100644
--- a/server-test/src/server-test/response/build.sbt
+++ b/server-test/src/server-test/response/build.sbt
@@ -1,6 +1,6 @@
 import sbt.internal.server.{ ServerHandler, ServerIntent }
 
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 Global / serverLog / logLevel := Level.Debug
 // custom handler