diff --git a/package.json b/package.json
index a000d90..57f8aa1 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "eslint-plugin-promise": "^3.7.0",
     "eslint-plugin-standard": "^3.0.1",
     "mocha": "^5.0.4",
-    "nyc": "^12.0.2",
+    "nyc": "^15.1.0",
     "redis": "^2.8.0"
   },
   "engines": {