diff --git a/build.sbt b/build.sbt
index 2f91a34..bd69e90 100644
--- a/build.sbt
+++ b/build.sbt
@@ -13,8 +13,8 @@ val compilerOptions = Seq(
   "-Xfuture"
 )
 
-val circeVersion = "0.9.0-M2"
-val iterateeVersion = "0.15.0"
+val circeVersion = "0.9.0-M3"
+val iterateeVersion = "0.16.0"
 val previousCirceIterateeVersion = "0.8.0"
 
 val baseSettings = Seq(