diff --git a/test/system-libraries/package.json b/test/system-libraries/package.json
index 28d1c0c36d..3abb439ccd 100644
--- a/test/system-libraries/package.json
+++ b/test/system-libraries/package.json
@@ -6,7 +6,7 @@
   "scripts": {
     "build": "mud build",
     "clean": "forge clean && shx rm -rf src/**/codegen",
-    "test": "mud test",
+    "test": "mud test --port 4243",
     "test:ci": "pnpm run test"
   },
   "devDependencies": {