diff --git a/builder/builder.go b/builder/builder.go
index f018e08cc..e0acc6104 100644
--- a/builder/builder.go
+++ b/builder/builder.go
@@ -45,7 +45,7 @@ import (
 )
 
 // Version of Mixer. Also used by the Makefile for releases.
-const Version = "4.6.5"
+const Version = "4.6.6"
 
 // Native controls whether mixer runs the command on the native machine or in a
 // container.