diff --git a/build.sbt b/build.sbt
index d5f8ac88f..774a4d591 100644
--- a/build.sbt
+++ b/build.sbt
@@ -10,7 +10,7 @@ import scala.util.Try
 // ThisBuild settings take lower precedence,
 // but can be shared across the multi projects.
 ThisBuild / version := {
-  val v = "1.5.5-SNAPSHOT"
+  val v = "1.6.0-SNAPSHOT"
   nightlyVersion.getOrElse(v)
 }
 ThisBuild / version2_13 := "2.0.0-SNAPSHOT"
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index d5035cf74..974fa291b 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -12,10 +12,10 @@ object Dependencies {
     sys.env.get("BUILD_VERSION") orElse sys.props.get("sbt.build.version")
 
   // sbt modules
-  private val ioVersion = nightlyVersion.getOrElse("1.5.1")
+  private val ioVersion = nightlyVersion.getOrElse("1.6.0-M1")
   private val lmVersion =
-    sys.props.get("sbt.build.lm.version").orElse(nightlyVersion).getOrElse("1.5.2")
-  val zincVersion = nightlyVersion.getOrElse("1.5.5")
+    sys.props.get("sbt.build.lm.version").orElse(nightlyVersion).getOrElse("1.6.0-M1")
+  val zincVersion = nightlyVersion.getOrElse("1.6.0-M1")
 
   private val sbtIO = "org.scala-sbt" %% "io" % ioVersion
 
diff --git a/sbt-app/src/sbt-test/source-dependencies/constants/pending b/sbt-app/src/sbt-test/source-dependencies/constants/pending
deleted file mode 100644
index 7a5ae5879..000000000
--- a/sbt-app/src/sbt-test/source-dependencies/constants/pending
+++ /dev/null
@@ -1,12 +0,0 @@
-# Marked as pending, see https://github.com/sbt/sbt/issues/1543
-# Tests if source dependencies are tracked properly
-# for compile-time constants (like final vals in top-level objects)
-# see https://issues.scala-lang.org/browse/SI-7173 for details
-# why compile-time constants can be tricky to track due to early inlining
-
-$ copy-file changes/B.scala B.scala
-
-$ copy-file changes/A1.scala A.scala
-> run 1
-$ copy-file changes/A2.scala A.scala
-> run 2
diff --git a/sbt-app/src/sbt-test/source-dependencies/constants/test b/sbt-app/src/sbt-test/source-dependencies/constants/test
new file mode 100644
index 000000000..bc2cb09c9
--- /dev/null
+++ b/sbt-app/src/sbt-test/source-dependencies/constants/test
@@ -0,0 +1,16 @@
+> ++2.12.15!
+
+$ copy-file changes/B.scala B.scala
+
+$ copy-file changes/A1.scala A.scala
+> run 1
+$ copy-file changes/A2.scala A.scala
+> run 2
+
+> clean
+> ++2.13.6!
+
+$ copy-file changes/A1.scala A.scala
+> run 1
+$ copy-file changes/A2.scala A.scala
+> run 2