diff --git a/version/version.go b/version/version.go
index 12de8c891..01bc3c14e 100644
--- a/version/version.go
+++ b/version/version.go
@@ -14,7 +14,7 @@ const Version = "1.6.6"
 // A pre-release marker for the version. If this is "" (empty string)
 // then it means that it is a final release. Otherwise, this is a pre-release
 // such as "dev" (in development), "beta", "rc1", etc.
-const VersionPrerelease = "dev"
+const VersionPrerelease = ""
 
 var PackerVersion *pluginVersion.PluginVersion
 
diff --git a/website/data/version.js b/website/data/version.js
index 772df599e..d2780615d 100644
--- a/website/data/version.js
+++ b/website/data/version.js
@@ -1 +1 @@
-export default '1.6.5'
+export default '1.6.6'