diff --git a/package.json b/package.json
index 6e88bed..6d7702f 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "pedding": "^1.1.0",
     "tsd": "^0.31.0",
     "typescript": "5",
-    "urllib": "^4.6.3"
+    "urllib": "3"
   },
   "homepage": "https://github.com/eggjs/egg-mock",
   "repository": {