diff --git a/package.json b/package.json
index d8874a0..68311d3 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "codeclimate-test-reporter": "^0.4.0",
     "coveralls": "^2.11.14",
     "esdoc": "^0.4.8",
-    "nyc": "^8.4.0"
+    "nyc": "^9.0.1"
   },
   "homepage": "http://aureooms.github.io/js-persistent",
   "keywords": [