diff --git a/package.json b/package.json
index 67051e7..c9d7786 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "gzip-size-cli": "^3.0.0",
     "mocha": "^6.1.4",
     "npm-watch": "~0.6.0",
-    "nyc": "^14.1.1",
+    "nyc": "^15.0.1",
     "parcel": "^1.12.3",
     "puppeteer": "^1.18.1",
     "puppeteer-to-istanbul": "^1.2.2",