diff --git a/main/src/main/scala/sbt/Defaults.scala b/main/src/main/scala/sbt/Defaults.scala
index 3ec96e89c..6e44ba080 100644
--- a/main/src/main/scala/sbt/Defaults.scala
+++ b/main/src/main/scala/sbt/Defaults.scala
@@ -312,6 +312,9 @@ object Defaults extends BuildCommon {
       csrLogger := LMCoursier.coursierLoggerTask.value,
       csrMavenProfiles :== Set.empty,
       csrReconciliations :== LMCoursier.relaxedForAllModules,
+      csrSameVersions := Seq(
+        ScalaArtifacts.Artifacts.map(a => InclExclRule(scalaOrganization.value, a)).toSet
+      ),
       csrCacheDirectory := {
         if (useCoursier.value) LMCoursier.defaultCacheLocation
         else Classpaths.dummyCoursierDirectory(appConfiguration.value)
@@ -979,6 +982,7 @@ object Defaults extends BuildCommon {
         compileAnalysisTargetRoot.value / compileAnalysisFilename.value
       },
       externalHooks := IncOptions.defaultExternal,
+      zincCompilationListeners := Seq.empty,
       incOptions := {
         val old = incOptions.value
         val extHooks = externalHooks.value