diff --git a/package.json b/package.json
index f37950f..4d101b9 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "eslint-plugin-standard": "^4.0.0",
     "magicpen": "^6.0.2",
     "mocha": "^6.0.0",
-    "nyc": "^14.0.0",
+    "nyc": "^15.0.0",
     "prettier": "~1.19.1",
     "sinon": "^8.0.1",
     "unexpected": "^11.0.0",