diff --git a/package.json b/package.json
index 2063d95..188bb97 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "eslint-plugin-import": "2.2.0",
     "istanbul": "0.4.5",
     "jsdom": "9.11.0",
-    "mkdirp": "0.5.1",
+    "mkdirp": "1.0.4",
     "mocha": "3.2.0",
     "uglifyjs": "2.4.10"
   },