diff --git a/plugins/dbgate-plugin-mongo/package.json b/plugins/dbgate-plugin-mongo/package.json
index a52e8869f..aacb4563b 100644
--- a/plugins/dbgate-plugin-mongo/package.json
+++ b/plugins/dbgate-plugin-mongo/package.json
@@ -41,7 +41,9 @@
     "dbgate-tools": "^5.0.0-alpha.1",
     "is-promise": "^4.0.0",
     "lodash": "^4.17.21",
-    "mongodb": "^6.3.0",
+    "mongodb": "^6.3.0"
+  },
+  "optionalDependencies": {
     "mongodb-client-encryption": "^6.0.0"
   }
 }