diff --git a/package.json b/package.json
index 08905d8..7367606 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "eslint-plugin-standard": "^4.0.0",
     "express": "^4.16.4",
     "mocha": "^6.1.1",
-    "nyc": "^14.0.0",
+    "nyc": "^15.0.0",
     "sinon": "^7.2.4",
     "sinon-chai": "^3.3.0",
     "tsd": "^0.8.0",