diff --git a/package.json b/package.json
index 2f8cc9c..5b26274 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "express": "^4.17.1",
     "magicpen-prism": "^5.0.0",
     "mocha": "^8.2.1",
-    "mock-fs": "^4.0.0",
+    "mock-fs": "^5.1.1",
     "nyc": "^15.0.0",
     "offline-github-changelog": "^2.0.0",
     "prettier": "~2.4.0",