diff --git a/package.json b/package.json
index 5c0d907b8..1b82e9d54 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
         "copyue4": "ts-node ./utils/copy_ue4_files.ts",
         "copyapi": "ts-node ./utils/copy_api_files.ts",
         "core": "ts-node ./utils/GenEntityExp.ts",
-        "test": "jest",
+        "test": "jest --maxWorkers=50%",
         "testu": "jest -u",
         "testw": "jest --watchAll",
         "postinstall": "ts-node ./utils/copy_type.ts",