diff --git a/CHANGELOG.md b/CHANGELOG.md
index b183292be..e2c23b302 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.5.1 (unreleased)
+
+
+
 ## 0.5.0 (12/30/2013)
 
 BACKWARDS INCOMPATIBILITIES:
diff --git a/packer/version.go b/packer/version.go
index 508c3e0fc..6a84606d9 100644
--- a/packer/version.go
+++ b/packer/version.go
@@ -10,12 +10,12 @@ import (
 var GitCommit string
 
 // The version of packer.
-const Version = "0.5.0"
+const Version = "0.5.1"
 
 // Any pre-release marker for the version. If this is "" (empty string),
 // then it means that it is a final release. Otherwise, this is the
 // pre-release marker.
-const VersionPrerelease = ""
+const VersionPrerelease = "dev"
 
 type versionCommand byte