diff --git a/packages/concourse-ts-fluent/package.json b/packages/concourse-ts-fluent/package.json
index afcf1cb4c..f8f4b7875 100644
--- a/packages/concourse-ts-fluent/package.json
+++ b/packages/concourse-ts-fluent/package.json
@@ -29,7 +29,7 @@
   },
   "devDependencies": {
     "ava": "^6.4.1",
-    "c8": "^10.1.3",
+    "c8": "^11.0.0",
     "ts-node-dev": "^2.0.0",
     "tsconfig-paths": "^4.2.0",
     "tsimp": "^2.0.12"