diff --git a/package.json b/package.json
index 6720979..db344f6 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "glob": "^7.1.3",
     "istanbul": "^0.4.5",
     "lolex": "^4.0.1",
-    "mkdirp": "^0.5.1",
+    "mkdirp": "^1.0.4",
     "mocha": "^6.1.3",
     "mocha-headless-chrome": "^2.0.2",
     "npm-check-updates": "^3.1.7",