diff --git a/package.json b/package.json
index 19f6c3a..e6f0c8b 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
     "devDependencies": {
         "@lumeweb/relay-types": "git+https://git.lumeweb.com/LumeWeb/relay-types.git",
         "@types/node": "^18.14.0",
-        "prettier": "^2.8.4"
+        "prettier": "^2.8.4",
+        "typescript": "^4.9.5"
     }
 }