diff --git a/README.md b/README.md
index bb4e42be..58d1e6fe 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,6 @@ bug和功能建议请在 Issues 提出。
 ## 联系我们
 
 QQ [3402182471](https://wpa.qq.com/msgrd?v=3&uin=3402182471&site=qq&menu=yes)  
-Hydro 开发群：709572015  
 Hydro 用户群：1085853538  
 Discord [Hydro](https://discord.gg/c633mBUJwS)  
 Telegram [@webpack_exports_undefined](https://t.me/webpack_exports_undefined)  
diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 03a94352..8f4627cf 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.28.54",
+    "version": "2.28.55",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",
diff --git a/packages/hydrooj/src/lib/avatar.ts b/packages/hydrooj/src/lib/avatar.ts
index 790f824a..cb064877 100644
--- a/packages/hydrooj/src/lib/avatar.ts
+++ b/packages/hydrooj/src/lib/avatar.ts
@@ -6,6 +6,7 @@ export const providers: Record<string, AvatarProvider> = {
     gravatar: (email, size) => `//gravatar.loli.net/avatar/${md5((email || '').toString().trim().toLowerCase())}?d=mm&s=${size || 32}`,
     qq: (id) => `//q1.qlogo.cn/g?b=qq&nk=${(/(\d+)/g.exec(id) || ['', ''])[1]}&s=640`,
     github: (id, size) => `//github.com/${id}.png?size=${Math.min(size, 460)}`,
+    url: (url) => url,
 };
 
 function avatar(src: string, size = 64) {