diff --git a/package.json b/package.json
index 72a746a..ae3934d 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "just-css-properties": "^1.0.0"
   },
   "devDependencies": {
-    "babel-core": "^6.0.12",
+    "babel-core": "^6.3.17",
     "babel-preset-es2015": "^6.0.12",
     "chai": "^3.0.0",
     "coveralls": "^2.11.2",