diff --git a/lib/js/package.json b/lib/js/package.json
index a59cdc4..2ddd238 100644
--- a/lib/js/package.json
+++ b/lib/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "thrift",
-  "version": "1.0.0",
+  "version": "0.12.0",
   "devDependencies": {
     "grunt": "^1.0.2",
     "grunt-cli": "^1.2.0",
diff --git a/lib/js/src/thrift.js b/lib/js/src/thrift.js
index 39e6db1..9418ca3 100644
--- a/lib/js/src/thrift.js
+++ b/lib/js/src/thrift.js
@@ -46,7 +46,7 @@
      * @const {string} Version
      * @memberof Thrift
      */
-    Version: '1.0.0-dev',
+    Version: '0.12.0',
 
     /**
      * Thrift IDL type string to Id mapping.