diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index 6fb42550..aa6e2dec 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -3,7 +3,7 @@ import Keys._
 
 // format: off
 object Dependencies {
-  val http4sVersion = "1.0.0-M35"
+  val http4sVersion = "1.0.0-M39"
   val circeVersion = "0.14.2"
 
   val scala_213 = "2.13.8"