diff --git a/package.json b/package.json
index 1b3b3ece..4c72fdc4 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "babel-core": "6.3.17",
+    "babel-core": "6.3.21",
     "babel-preset-es2015": "6.3.13",
     "babel-register": "6.3.13",
     "chai": "3.4.1",