diff --git a/package.json b/package.json
index 995ec32..3d1edba 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "marked": "^4.0.10",
     "minio": "^7.0.26",
     "node-fetch": "^3.1.0",
-    "prettier": "^2.5.1",
+    "prettier": "2.5.1",
     "prettify": "^0.1.7",
     "qiniu-js": "^3.4.0",
     "regenerator-runtime": "^0.13.9",