diff --git a/package.json b/package.json
index 1ddf84a..66a2102 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "babel-preset-es2015": "^6.3.13",
     "chai": "^3.4.1",
     "memory-fs": "^0.3.0",
-    "mocha": "^2.3.4",
+    "mocha": "^9.0.3",
     "webpack": "^1.12.9"
   }
 }