diff --git a/packages/worker/package.json b/packages/worker/package.json
index affd338..67fba8e 100644
--- a/packages/worker/package.json
+++ b/packages/worker/package.json
@@ -20,7 +20,7 @@
     "react-dom": "^18.2.0"
   },
   "devDependencies": {
-    "@cloudflare/workers-types": "^3.14.1",
+    "@cloudflare/workers-types": "^4.20230115.0",
     "@types/react": "^18.0.15",
     "@types/react-dom": "^18.0.6"
   },