diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 07f21b2cd..10de2effc 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.18.2",
+    "version": "2.18.3",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",
diff --git a/packages/hydrooj/src/service/server.ts b/packages/hydrooj/src/service/server.ts
index c9ab67347..632edbbe0 100644
--- a/packages/hydrooj/src/service/server.ts
+++ b/packages/hydrooj/src/service/server.ts
@@ -702,7 +702,7 @@ export class ConnectionHandler extends HandlerCommon {
                 params: err.params || [],
             },
         });
-        this.close(1001, err.toString());
+        this.close(4000, err.toString());
     }
 
     async getSession(cookieHeader: string) {