diff --git a/build.sbt b/build.sbt
index 6cd9287b..287f07df 100644
--- a/build.sbt
+++ b/build.sbt
@@ -89,7 +89,9 @@ lazy val compat = MultiScalaCrossProject(JSPlatform, JVMPlatform, NativePlatform
         import com.typesafe.tools.mima.core._
         import com.typesafe.tools.mima.core.ProblemFilters._
         Seq(
-          exclude[ReversedMissingMethodProblem]("scala.collection.compat.PackageShared.*") // it's package-private
+          exclude[ReversedMissingMethodProblem]("scala.collection.compat.PackageShared.*"), // it's package-private
+          exclude[MissingClassProblem]("scala.annotation.nowarn"), // it's part of scala-library from 2.12.13 onwards
+          exclude[MissingClassProblem]("scala.annotation.nowarn$") // it's part of scala-library from 2.12.13 onwards
         )
       },
     )
diff --git a/compat/src/main/scala-2.11_2.12/scala/annotation/nowarn.scala b/compat/src/main/scala-2.11/scala/annotation/nowarn.scala
similarity index 100%
rename from compat/src/main/scala-2.11_2.12/scala/annotation/nowarn.scala
rename to compat/src/main/scala-2.11/scala/annotation/nowarn.scala