diff --git a/packages/plugins/@nocobase/plugin-data-source-main/src/server/server.ts b/packages/plugins/@nocobase/plugin-data-source-main/src/server/server.ts
index 9b77f75f52..98cf37984e 100644
--- a/packages/plugins/@nocobase/plugin-data-source-main/src/server/server.ts
+++ b/packages/plugins/@nocobase/plugin-data-source-main/src/server/server.ts
@@ -10,7 +10,6 @@
 import { Filter, InheritedCollection, UniqueConstraintError } from '@nocobase/database';
 import PluginErrorHandler from '@nocobase/plugin-error-handler';
 import { Plugin } from '@nocobase/server';
-import { Mutex } from 'async-mutex';
 import lodash from 'lodash';
 import path from 'path';
 import * as process from 'process';