diff --git a/lib/ace/version.rb b/lib/ace/version.rb
index 8cdb90b..af1b89c 100644
--- a/lib/ace/version.rb
+++ b/lib/ace/version.rb
@@ -1,5 +1,5 @@
 # encoding: utf-8
 
 module Ace
-  VERSION = "0.4.4"
+  VERSION ||= "0.4.4"
 end