diff --git a/package.json b/package.json
index ebfd2f2..d40587f 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "eslint": "^9.36.0",
     "hallmark": "^5.0.1",
     "neostandard": "^0.12.2",
-    "nyc": "^17.1.0",
+    "nyc": "^18.0.0",
     "tap-arc": "^1.3.2",
     "tape": "^5.9.0",
     "typescript": "^5.9.2"