diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7c8a2b5ae..9fdad08a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.6.6 (unreleased)
+
+
+
 ## 0.6.5 (October 8, 2010)
 
   - Validations on base MAC address to avoid situation described in GH-166, GH-181
diff --git a/Gemfile.lock b/Gemfile.lock
index 5ecf9da30..29aa550af 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,7 +8,7 @@ GIT
 PATH
   remote: .
   specs:
-    vagrant (0.6.5)
+    vagrant (0.6.6.dev)
       archive-tar-minitar (= 0.5.2)
       erubis (~> 2.6.6)
       i18n (~> 0.4.1)
diff --git a/lib/vagrant/version.rb b/lib/vagrant/version.rb
index 19c212d7b..3a48cc930 100644
--- a/lib/vagrant/version.rb
+++ b/lib/vagrant/version.rb
@@ -2,5 +2,5 @@ module Vagrant
   # This will always be up to date with the current version of Vagrant,
   # since it is used to generate the gemspec and is also the source of
   # the version for `vagrant -v`
-  VERSION = "0.6.5"
+  VERSION = "0.6.6.dev"
 end