diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7181c2f8c..d1ac202b3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,5 @@
+## 0.6.6 (Unreleased)
+
 ## 0.6.5 (October 21, 2015)
 
 FEATURES:
diff --git a/terraform/version.go b/terraform/version.go
index ff938c244..403f09bd2 100644
--- a/terraform/version.go
+++ b/terraform/version.go
@@ -1,9 +1,9 @@
 package terraform
 
 // The main version number that is being run at the moment.
-const Version = "0.6.5"
+const Version = "0.6.6"
 
 // 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 = ""
+const VersionPrerelease = "dev"