diff --git a/project/Build.scala b/project/Build.scala
index 3dac5b7c2907..e35b6c9f02e5 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -101,7 +101,7 @@ object Build {
    *  set to 3.1.3. If it is going to be 3.1.0, it must be set to the latest
    *  3.0.x release.
    */
-  val previousDottyVersion = "3.4.0-RC1"
+  val previousDottyVersion = "3.4.0-RC2"
 
   object CompatMode {
     final val BinaryCompatible = 0
diff --git a/project/MiMaFilters.scala b/project/MiMaFilters.scala
index 13daebf79adb..b07c18f760f7 100644
--- a/project/MiMaFilters.scala
+++ b/project/MiMaFilters.scala
@@ -5,20 +5,11 @@ object MiMaFilters {
   val LibraryBackwards: Map[String, Seq[ProblemFilter]] = Map(
     // In general we should never have backwards incompatible changes in the library.
     // Only exceptional cases should be added here.
-    Build.previousDottyVersion -> Seq(
-      // This language feature was in 3.4.0-RC1 but will be removed in 3.4.0-RC2
-      ProblemFilters.exclude[MissingFieldProblem]("scala.runtime.stdLibPatches.language#deprecated.ascriptionVarargsUnpacking"),
-      ProblemFilters.exclude[MissingClassProblem]("scala.runtime.stdLibPatches.language$deprecated$ascriptionVarargsUnpacking$"),
-    )
+    Build.previousDottyVersion -> Seq.empty
   )
   val LibraryForward: Map[String, Seq[ProblemFilter]] = Map(
     // Additions that require a new minor version of the library
     Build.previousDottyVersion -> Seq(
-      // This language feature is not in 3.4.0-RC1 but will be added in 3.4.0-RC2
-      ProblemFilters.exclude[MissingFieldProblem]("scala.runtime.stdLibPatches.language.3.5-migration"),
-      ProblemFilters.exclude[MissingFieldProblem]("scala.runtime.stdLibPatches.language.3.5"),
-      ProblemFilters.exclude[MissingClassProblem]("scala.runtime.stdLibPatches.language$3$u002E5$"),
-      ProblemFilters.exclude[MissingClassProblem]("scala.runtime.stdLibPatches.language$3$u002E5$minusmigration$"),
     )
   )
   val TastyCore: Seq[ProblemFilter] = Seq(