diff --git a/VERSION b/VERSION
index cd802a1ec4..ba92e72f57 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-6.6.0
\ No newline at end of file
+6.6.1
\ No newline at end of file
diff --git a/packages/babel-polyfill/package.json b/packages/babel-polyfill/package.json
index c6dc566156..0a1f46dc13 100644
--- a/packages/babel-polyfill/package.json
+++ b/packages/babel-polyfill/package.json
@@ -1,6 +1,6 @@
 {
   "name": "babel-polyfill",
-  "version": "6.6.0",
+  "version": "6.6.1",
   "description": "",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://babeljs.io/",
diff --git a/packages/babel-runtime/package.json b/packages/babel-runtime/package.json
index e8da8b521f..a5dd0f7a92 100644
--- a/packages/babel-runtime/package.json
+++ b/packages/babel-runtime/package.json
@@ -1,6 +1,6 @@
 {
   "name": "babel-runtime",
-  "version": "6.6.0",
+  "version": "6.6.1",
   "description": "babel selfContained runtime",
   "license": "MIT",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-runtime",