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 bc833fd93..c9ad52715 100644
--- a/sbt-app/src/sbt-test/actions/cross-advanced/build.sbt
+++ b/sbt-app/src/sbt-test/actions/cross-advanced/build.sbt
@@ -11,7 +11,7 @@ lazy val root = (project in file("."))
 
 lazy val foo = project
   .settings(
-    crossScalaVersions := Seq(scala212, "2.13.1"),
+    crossScalaVersions := Seq(scala212, "2.13.11"),
     libraryDependencies += "org.scalatest" %% "scalatest" % "3.1.0",
 
     check := {
@@ -43,7 +43,7 @@ lazy val bar = project
 
 lazy val baz = project
   .settings(
-    crossScalaVersions := Seq("2.13.1"),
+    crossScalaVersions := Seq("2.13.11"),
     check := {
       // This tests that +baz/check will respect bar's crossScalaVersions and not switch
       val x = (LocalProject("bar") / scalaVersion).value
@@ -54,7 +54,7 @@ lazy val baz = project
 
 lazy val client = project
   .settings(
-    crossScalaVersions := Seq(scala212, "2.13.1"),
+    crossScalaVersions := Seq(scala212, "2.13.11"),
     check := (Compile / compile).value,
     compile2 := (Compile / compile).value,
   )
diff --git a/sbt-app/src/sbt-test/actions/cross-advanced/test b/sbt-app/src/sbt-test/actions/cross-advanced/test
index 4828b39b9..e413a129a 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("2.12.18", "2.13.1")
+> set root/crossScalaVersions := Seq("2.12.18", "2.13.11")
 > + 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 b8ff210c9..5554632a2 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 := "2.12.12"
-crossScalaVersions := List("2.12.12", "2.13.0")
+scalaVersion := "2.12.18"
+crossScalaVersions := List("2.12.18", "2.13.11")
 
 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 7fb4676d4..5b20f8f5f 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", "2.12.12")
+crossScalaVersions := Seq[String]("2.11.12", "2.12.18")
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 e731a77d1..cd87f4b85 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
 
-> ++ 2.12.12  ; compile;
+> ++ 2.12.18  ; compile;
 
-> ++ 2.12.12 ; compile
+> ++ 2.12.18 ; 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 066ef1d1e..c4c532266 100644
--- a/sbt-app/src/sbt-test/actions/cross-multiproject/build.sbt
+++ b/sbt-app/src/sbt-test/actions/cross-multiproject/build.sbt
@@ -1,5 +1,5 @@
-lazy val scala212 = "2.12.12"
-lazy val scala213 = "2.13.1"
+lazy val scala212 = "2.12.18"
+lazy val scala213 = "2.13.11"
 
 ThisBuild / crossScalaVersions := Seq(scala212, scala213)
 ThisBuild / scalaVersion       := scala212
diff --git a/sbt-app/src/sbt-test/actions/cross-multiproject/test b/sbt-app/src/sbt-test/actions/cross-multiproject/test
index b464e9cb3..c39be13ba 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
-> ++ 2.12.12 -v compile
+> ++ 2.12.18 -v compile
 $ exists lib/target/scala-2.12
 -$ exists lib/target/scala-2.13
 $ exists sbt-foo/target/scala-2.12
@@ -29,14 +29,14 @@ $ exists sbt-foo/target/scala-2.12
 
 # Test ++ leaves crossScalaVersions unchanged
 > clean
-> ++2.12.12
+> ++2.12.18
 > +extrasProj/compile
 $ exists extras/target/scala-2.13
 $ exists extras/target/scala-2.12
 
 # test safe switching
 > clean
-> ++ 2.13.1 -v compile
+> ++ 2.13.11 -v compile
 $ exists lib/target/scala-2.13
 -$ exists lib/target/scala-2.12
 # -$ exists sbt-foo/target/scala-2.12
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 edba44f2f..374a3d6ab 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
@@ -1,5 +1,5 @@
 lazy val scala212 = "2.12.18"
-lazy val scala213 = "2.13.1"
+lazy val scala213 = "2.13.11"
 
 ThisBuild / scalaVersion := scala212
 
diff --git a/sbt-app/src/sbt-test/actions/cross-strict-aggregation/test b/sbt-app/src/sbt-test/actions/cross-strict-aggregation/test
index 996094f8e..8f64e9ce5 100644
--- a/sbt-app/src/sbt-test/actions/cross-strict-aggregation/test
+++ b/sbt-app/src/sbt-test/actions/cross-strict-aggregation/test
@@ -2,7 +2,7 @@
 
 -> ++2.12.12
 
-> ++2.13.1 compile
+> ++2.13.11 compile
 
 $ exists core/target/scala-2.13
 -$ exists module/target/scala-2.13
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 2c90c5429..b79ed67a7 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 8f1b96ff9..3bfa108cd 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("2.12.12", "2.13.3"),
-    scalaVersion := "2.12.12",
+    crossScalaVersions := Seq("2.12.18", "2.13.11"),
+    scalaVersion := "2.12.18",
     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/doc/test b/sbt-app/src/sbt-test/actions/doc/test
index 14318f4e5..7b8c7ccd5 100644
--- a/sbt-app/src/sbt-test/actions/doc/test
+++ b/sbt-app/src/sbt-test/actions/doc/test
@@ -35,7 +35,7 @@ $ exists target/api/pkg/J.html
 $ absent target/api/index.js
 
 > setDocExtension scala
-> ++2.13.3
+> ++2.13.11
 > clean
 $ absent target/api/A$.html
 > doc
diff --git a/sbt-app/src/sbt-test/actions/generator/build.sbt b/sbt-app/src/sbt-test/actions/generator/build.sbt
index d9139f3a0..af23bebf7 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 e3dba3ba2..08909f558 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" :: "2.12.12" :: Nil
+crossScalaVersions := "2.11.12" :: "2.12.18" :: Nil
diff --git a/sbt-app/src/sbt-test/actions/multi-command/test b/sbt-app/src/sbt-test/actions/multi-command/test
index 568d028fb..dc657b553 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
 
-> ++2.12.12 compile; setStringValue foo; checkStringValue foo
+> ++2.12.18 compile; setStringValue foo; checkStringValue foo
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 374410229..501054f78 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 := "2.12.12"
+scalaVersion := "2.12.18"
 
 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 920bc2e0c..e4e2c175b 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 889490e92..7ddb5c706 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 := "2.12.12",
+  scalaVersion := "2.12.18",
   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 9bd266eb7..7015d24ed 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 := "2.12.12",
+  scalaVersion := "2.12.18",
   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 b0fe1aa10..4c0050eb4 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 := "2.12.12",
+  scalaVersion := "2.12.18",
   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 45c966d82..8410b25ed 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 := "2.12.12",
+  scalaVersion := "2.12.18",
   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 1a921e076..d0b5cdfeb 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 := "2.12.12",
+  scalaVersion := "2.12.18",
   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 d5fedc71b..39146c260 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>2.12.12</version>
+            <version>2.12.18</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 d5fedc71b..39146c260 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>2.12.12</version>
+            <version>2.12.18</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 af76b9d35..88af78b3c 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 := "2.12.12"
+scalaVersion := "2.12.18"
 
 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 5745fe973..6762ba858 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 := "2.12.12",
+  scalaVersion := "2.12.18",
   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 c9260beeb..fbf51533b 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 lazy val root = (project in file(".")).
   settings(
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 804a1206d..6b4c2e3ba 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
@@ -1,5 +1,5 @@
-lazy val scala212 = "2.12.12"
-lazy val scala213 = "2.13.1"
+lazy val scala212 = "2.12.18"
+lazy val scala213 = "2.13.11"
 ThisBuild / scalaVersion := scala212
 
 lazy val root = (project in file("."))
diff --git a/sbt-app/src/sbt-test/console/project-compiler-bridge/build.sbt b/sbt-app/src/sbt-test/console/project-compiler-bridge/build.sbt
index 3c4ba1908..35363129b 100644
--- a/sbt-app/src/sbt-test/console/project-compiler-bridge/build.sbt
+++ b/sbt-app/src/sbt-test/console/project-compiler-bridge/build.sbt
@@ -1,4 +1,4 @@
-scalaVersion := "2.13.1"
+scalaVersion := "2.13.11"
 
 // Send some bogus initial command so that it doesn't get stuck.
 // The task itself will still succeed.
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 366c27de7..2405c81d5 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 := "2.12.12"
+scalaVersion := "2.12.18"
diff --git a/sbt-app/src/sbt-test/dependency-graph/asciiGraphWidth/build.sbt b/sbt-app/src/sbt-test/dependency-graph/asciiGraphWidth/build.sbt
index aa4780397..698b97b4e 100644
--- a/sbt-app/src/sbt-test/dependency-graph/asciiGraphWidth/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-graph/asciiGraphWidth/build.sbt
@@ -1,5 +1,5 @@
 ThisBuild / version := "0.1.0-SNAPSHOT"
-ThisBuild / scalaVersion := "2.13.5"
+ThisBuild / scalaVersion := "2.13.11"
 
 name := "asciiGraphWidthSpecs"
 
diff --git a/sbt-app/src/sbt-test/dependency-graph/whatDependsOn-without-previous-initialization/build.sbt b/sbt-app/src/sbt-test/dependency-graph/whatDependsOn-without-previous-initialization/build.sbt
index 4826145e5..a7bcd4c9f 100644
--- a/sbt-app/src/sbt-test/dependency-graph/whatDependsOn-without-previous-initialization/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-graph/whatDependsOn-without-previous-initialization/build.sbt
@@ -1,5 +1,5 @@
 ThisBuild / version := "0.1.0-SNAPSHOT"
-ThisBuild / scalaVersion := "2.13.5"
+ThisBuild / scalaVersion := "2.13.11"
 
 name := "whatDependsOn"
 
diff --git a/sbt-app/src/sbt-test/dependency-graph/whatDependsOn/build.sbt b/sbt-app/src/sbt-test/dependency-graph/whatDependsOn/build.sbt
index 4826145e5..a7bcd4c9f 100644
--- a/sbt-app/src/sbt-test/dependency-graph/whatDependsOn/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-graph/whatDependsOn/build.sbt
@@ -1,5 +1,5 @@
 ThisBuild / version := "0.1.0-SNAPSHOT"
-ThisBuild / scalaVersion := "2.13.5"
+ThisBuild / scalaVersion := "2.13.11"
 
 name := "whatDependsOn"
 
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 e4ffeae52..a2be213fe 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     := "2.12.12"
+ThisBuild / scalaVersion     := "2.12.18"
 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 69771b0b8..910baa6b0 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 // 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 e5b6ea9d3..8c978bd97 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 5f6646644..ef4e1834c 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 c03c939e6..fed0b72ff 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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/cp-order/build.sbt b/sbt-app/src/sbt-test/dependency-management/cp-order/build.sbt
index 3ea183127..e075e4fd0 100644
--- a/sbt-app/src/sbt-test/dependency-management/cp-order/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/cp-order/build.sbt
@@ -1,4 +1,4 @@
-scalaVersion := "2.13.1"
+scalaVersion := "2.13.11"
 csrConfiguration := csrConfiguration.value.withCache(target.value / "coursier-cache")
 
 libraryDependencies += "com.typesafe.play" %% "play-test" % "2.8.0-RC1" % Test // worked around in 2.8.0
diff --git a/sbt-app/src/sbt-test/dependency-management/credentials/build.sbt b/sbt-app/src/sbt-test/dependency-management/credentials/build.sbt
index 81394881e..867786f77 100644
--- a/sbt-app/src/sbt-test/dependency-management/credentials/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/credentials/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.13.0"
+ThisBuild / scalaVersion := "2.13.11"
 ThisBuild / csrCacheDirectory := (ThisBuild / baseDirectory).value / "coursier-cache"
 ivyPaths := IvyPaths(baseDirectory.value, Some(target.value / "ivy-cache"))
 
diff --git a/sbt-app/src/sbt-test/dependency-management/evicted-semver-spec/build.sbt b/sbt-app/src/sbt-test/dependency-management/evicted-semver-spec/build.sbt
index 9460b811d..073028662 100644
--- a/sbt-app/src/sbt-test/dependency-management/evicted-semver-spec/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/evicted-semver-spec/build.sbt
@@ -1,7 +1,7 @@
 import xsbti.AppConfiguration
 // ThisBuild / useCoursier := false
 ThisBuild / organization := "com.example"
-ThisBuild / scalaVersion := "2.13.3"
+ThisBuild / scalaVersion := "2.13.11"
 ThisBuild / versionScheme := Some("semver-spec")
 ThisBuild / csrCacheDirectory := (ThisBuild / baseDirectory).value / "coursier-cache"
 
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 366c27de7..2405c81d5 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 := "2.12.12"
+scalaVersion := "2.12.18"
diff --git a/sbt-app/src/sbt-test/dependency-management/missingok/build.sbt b/sbt-app/src/sbt-test/dependency-management/missingok/build.sbt
index 51257fd6e..8b24e0d5e 100644
--- a/sbt-app/src/sbt-test/dependency-management/missingok/build.sbt
+++ b/sbt-app/src/sbt-test/dependency-management/missingok/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.13.2"
+ThisBuild / scalaVersion := "2.13.11"
 libraryDependencies ++= Seq(
   "com.chuusai" %% "shapeless" % "2.3.3",
   // non-existing
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 6d5248abf..607bbacc1 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 862e728fc..4b9b31945 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 // TTL is 24h so we can't detect the change
 ThisBuild / useCoursier := false
diff --git a/sbt-app/src/sbt-test/plugins/hydra/build.sbt b/sbt-app/src/sbt-test/plugins/hydra/build.sbt
index 2324a2515..4fbd558b6 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 8f8aa3c80..6203106e2 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 name := "hello"
 enablePlugins(JavaAppPackaging)
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 cb6b82872..be91e40d7 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 := "2.12.12"
+scalaVersion := "2.12.18"
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 2179dcf9e..7f712f97e 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", "2.12.12")
-scalaVersion in ThisBuild := "2.12.12"
+val buildCrossList = List("2.10.7", "2.11.12", "2.12.18")
+scalaVersion in ThisBuild := "2.12.18"
 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 5e39482e1..96b4f560b 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 0d567f22e..bbc127ca0 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 ThisBuild / trackInternalDependencies := TrackLevel.NoTracking
 
 lazy val root = (project in file("."))
diff --git a/sbt-app/src/sbt-test/project/val-order/build.sbt b/sbt-app/src/sbt-test/project/val-order/build.sbt
index d34d36cdc..43de68746 100644
--- a/sbt-app/src/sbt-test/project/val-order/build.sbt
+++ b/sbt-app/src/sbt-test/project/val-order/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion     := "2.13.1"
+ThisBuild / scalaVersion     := "2.13.11"
 ThisBuild / version          := "0.1.0-SNAPSHOT"
 
 lazy val check = taskKey[Unit]("")
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 9298a3b66..61b35df9c 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 8672882ba..d1b542f86 100644
--- a/sbt-app/src/sbt-test/source-dependencies/constants/test
+++ b/sbt-app/src/sbt-test/source-dependencies/constants/test
@@ -8,7 +8,7 @@ $ copy-file changes/A2.scala A.scala
 > run 2
 
 > clean
-> ++2.13.6!
+> ++2.13.11!
 
 $ copy-file changes/A1.scala A.scala
 > run 1
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 d0d770085..b491e62d3 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
-> ++2.12.12!
+> ++2.12.18!
 > 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 ae85d25a6..a3c6c66d8 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 71627ff7c..da3c591b8 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 71627ff7c..da3c591b8 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 71627ff7c..da3c591b8 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 71627ff7c..da3c591b8 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 val defaultSettings = Seq(
   libraryDependencies += scalaVersion("org.scala-lang" % "scala-reflect" % _ ).value
diff --git a/sbt-app/src/sbt-test/source-dependencies/pipelining-java/build.sbt b/sbt-app/src/sbt-test/source-dependencies/pipelining-java/build.sbt
index a5b9eef0d..220f54838 100644
--- a/sbt-app/src/sbt-test/source-dependencies/pipelining-java/build.sbt
+++ b/sbt-app/src/sbt-test/source-dependencies/pipelining-java/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.13.3"
+ThisBuild / scalaVersion := "2.13.11"
 ThisBuild / usePipelining := true
 
 lazy val root = (project in file("."))
diff --git a/sbt-app/src/sbt-test/source-dependencies/pipelining/build.sbt b/sbt-app/src/sbt-test/source-dependencies/pipelining/build.sbt
index 36db86700..e35910cc1 100644
--- a/sbt-app/src/sbt-test/source-dependencies/pipelining/build.sbt
+++ b/sbt-app/src/sbt-test/source-dependencies/pipelining/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion := "2.13.3"
+ThisBuild / scalaVersion := "2.13.11"
 ThisBuild / usePipelining := true
 
 lazy val root = (project in file("."))
diff --git a/sbt-app/src/sbt-test/tests/arguments/build.sbt b/sbt-app/src/sbt-test/tests/arguments/build.sbt
index 34877ddf4..c7cce3910 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 4a2b5826a..967047a91 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 4a2b5826a..967047a91 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 c24c76ba9..f9efce690 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 bd0bb8041..b761ffb50 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 2d60ab369..55d88c1a2 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 f6eacaa6d..c148dc813 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 bf225760b..4ff639b35 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 2eba9d278..50ccf8d4b 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 77c74e51b..8cef6ee26 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 e0e873c69..11a9108de 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 fd96cc57a..283ac3132 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 8fae2d48f..378c6fe97 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 53b13bf93..e002165e6 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 bd76bb20c..d4bbf800f 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 21b809d76..e7c35f471 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 dc50503e9..514bb7f05 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 d4737f0f5..65eb9b874 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 27b51b848..c4bc7adca 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 53ce38e0e..2dcb57b05 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 858e7a1c2..e4c5dd616 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 libraryDependencies += specs % Test
diff --git a/sbt-app/src/sbt-test/tests/scalatest/build.sbt b/sbt-app/src/sbt-test/tests/scalatest/build.sbt
index 1f501a862..44d5653a0 100644
--- a/sbt-app/src/sbt-test/tests/scalatest/build.sbt
+++ b/sbt-app/src/sbt-test/tests/scalatest/build.sbt
@@ -1,4 +1,4 @@
-ThisBuild / scalaVersion     := "2.13.1"
+ThisBuild / scalaVersion     := "2.13.11"
 ThisBuild / version          := "0.1.0-SNAPSHOT"
 ThisBuild / organization     := "com.example"
 ThisBuild / organizationName := "example"
diff --git a/sbt-app/src/sbt-test/tests/serial/build.sbt b/sbt-app/src/sbt-test/tests/serial/build.sbt
index 11e892129..a5a0baf71 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 516692e12..69a28f048 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 be394850b..bc028ed12 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 07a4350f6..ddc7a9055 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 982d2822b..3ed2bb943 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 be394850b..bc028ed12 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 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 9fd396d27..d4d182588 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 9fd396d27..d4d182588 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 := "2.12.12"
+ThisBuild / scalaVersion := "2.12.18"
 
 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 1ac4e953a..662c5cc9a 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", "2.12.12")
+crossScalaVersions := Seq("2.11.12", "2.12.18")