diff --git a/bower.json b/bower.json
index a7fb3e4..14d7529 100644
--- a/bower.json
+++ b/bower.json
@@ -4,7 +4,6 @@
     "c3.css",
     "c3.js"
   ],
-  "version": "0.4.11-rc1",
   "homepage": "https://github.com/masayuki0812/c3",
   "authors": [
     "Masayuki Tanaka <masayuki0812@mac.com>"