diff --git a/build.sbt b/build.sbt
index a1912479..eb69e41a 100644
--- a/build.sbt
+++ b/build.sbt
@@ -18,7 +18,7 @@ inThisBuild(
   )
 )
 
-val http4sVersion = "1.0.0-M40"
+val http4sVersion = "1.0.0-M41"
 
 val jetty = "12.0.7"
 
@@ -74,7 +74,7 @@ lazy val server = project
       "org.scalameta" %% "munit-scalacheck" % munit % Test,
       "org.http4s" %% "http4s-circe" % http4sVersion % Test,
       "org.http4s" %% "http4s-jdk-http-client" % "1.0.0-M9" % Test,
-      "org.typelevel" %% "munit-cats-effect" % "2.0.0-M3" % Test
+      "org.typelevel" %% "munit-cats-effect" % "2.0.0-M4" % Test
     ),
     libraryDependencies ++= nativeNettyModules,
     mimaBinaryIssueFilters := Nil
@@ -99,7 +99,7 @@ lazy val client = project
       "com.github.bbottema" % "java-socks-proxy-server" % "3.0.0" % Test,
       "org.scalameta" %% "munit" % munit % Test,
       "ch.qos.logback" % "logback-classic" % "1.2.13" % Test,
-      "org.typelevel" %% "munit-cats-effect" % "2.0.0-M3" % Test
+      "org.typelevel" %% "munit-cats-effect" % "2.0.0-M4" % Test
     ),
     libraryDependencies ++= nativeNettyModules
   )