diff --git a/package.json b/package.json
index f53598e..c071705 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "cross-env": "^5.0.1",
     "eslint": "^4.1.1",
     "mocha": "^3.4.2",
-    "mocha-loader": "^1.1.1",
+    "mocha-loader": "^4.0.1",
     "rollup": "^0.46.0",
     "rollup-plugin-babel": "^2.7.1",
     "rollup-plugin-commonjs": "^8.0.2",