diff --git a/package.json b/package.json
index 5bac49c174..14a7c4eb3c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "babylon",
-  "version": "6.6.0",
+  "version": "6.6.4",
   "description": "A JavaScript parser",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://babeljs.io/",
@@ -11,7 +11,7 @@
     "babel-runtime": "^5.0.0"
   },
   "devDependencies": {
-    "babel-helper-fixtures": "^6.3.13"
+    "babel-helper-fixtures": "^6.6.4"
   },
   "bin": {
     "babylon": "./bin/babylon.js"