diff --git a/package.json b/package.json
index 5bd1160c..958c26cc 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
     "@types/proxyquire": "^1.3.28",
     "@types/sinon": "^10.0.0",
     "@types/uuid": "^9.0.0",
-    "c8": "^8.0.0",
+    "c8": "^9.0.0",
     "codecov": "^3.5.0",
     "discovery-tsd": "^0.3.0",
     "eslint-plugin-prettier": "^5.0.0",