diff --git a/package.json b/package.json
index 8332b659..4e6d390c 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "babel-core": "6.6.0",
+    "babel-core": "6.6.4",
     "babel-preset-es2015": "6.6.0",
     "babel-register": "6.6.0",
     "chai": "3.5.0",