diff --git a/project/ProjectPlugin.scala b/project/ProjectPlugin.scala
index 2ba3685..5baae7c 100644
--- a/project/ProjectPlugin.scala
+++ b/project/ProjectPlugin.scala
@@ -40,7 +40,7 @@ object ProjectPlugin extends AutoPlugin {
       Seq(
         libraryDependencies ++=
           Seq(
-            "org.http4s" %%% "http4s-client" % "1.0.0-M41"
+            "org.http4s" %%% "http4s-client" % "1.0.0-M42"
           )
       )