diff --git a/project/LibraryDependencies.scala b/project/LibraryDependencies.scala
index 73093957..9c8d3692 100644
--- a/project/LibraryDependencies.scala
+++ b/project/LibraryDependencies.scala
@@ -30,7 +30,7 @@ object LibraryDependencies {
     val scalacheck =
       Def.setting("org.scalameta" %%% "munit-scalacheck" % munitVersion)
     val catsEffect =
-      Def.setting("org.typelevel" %%% "munit-cats-effect" % "2.0.0-M3")
+      Def.setting("org.typelevel" %%% "munit-cats-effect" % "2.0.0-M4")
     val scalacheckEffect =
       Def.setting("org.typelevel" %%% "scalacheck-effect-munit" % "2.0.0-M2")
   }