diff --git a/package.json b/package.json
index 7d39eb8..0a9fa60 100644
--- a/package.json
+++ b/package.json
@@ -64,7 +64,7 @@
     "gulp-sass": "^3.1.0",
     "gulp-shell": "^0.6.1",
     "gulp-util": "^3.0.7",
-    "mocha": "^3.0.0",
+    "mocha": "^4.0.1",
     "rollup": "^0.48.0",
     "rollup-plugin-babel": "^3.0.2",
     "rollup-plugin-commonjs": "^8.0.2",