diff --git a/build.sbt b/build.sbt
index a11f862..df58b79 100644
--- a/build.sbt
+++ b/build.sbt
@@ -39,7 +39,7 @@ lazy val core = crossProject(JSPlatform, JVMPlatform, NativePlatform)
     libraryDependencies ++= Seq(
       "org.typelevel"               %%% "cats-core"                  % catsV,
       "org.typelevel"               %%% "cats-effect"                % catsEffectV,
-      "org.typelevel" %%% "munit-cats-effect" % "2.0.0-M3" % Test,
+      "org.typelevel" %%% "munit-cats-effect" % "2.0.0-M4" % Test,
     ),
     mimaBinaryIssueFilters := Seq(
       ProblemFilters.exclude[DirectMissingMethodProblem]("io.chrisdavenport.circuit.CircuitBreaker#SyncCircuitBreaker.this")