diff --git a/bower.json b/bower.json
index 05495f8..a017004 100644
--- a/bower.json
+++ b/bower.json
@@ -1,7 +1,7 @@
 {
   "name": "c3",
   "main": "c3.min.js",
-  "version": "0.1.19",
+  "version": "0.1.20",
   "homepage": "https://github.com/masayuki0812/c3",
   "authors": [
     "Masayuki Tanaka <masayuki0812@mac.com>"
diff --git a/package.json b/package.json
index a226b26..bb497dc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "c3",
-  "version": "0.1.19",
+  "version": "0.1.20",
   "description": "D3-based reusable chart library",
   "main": "c3.js",
   "scripts": {