diff --git a/build.sbt b/build.sbt
index 7eb899f9..a818a6e2 100644
--- a/build.sbt
+++ b/build.sbt
@@ -18,7 +18,7 @@ inThisBuild(
   )
 )
 
-val http4sVersion = "1.0.0-M44"
+val http4sVersion = "1.0.0-M45"
 
 val jetty = "12.0.16"