diff --git a/db/app_uoj233.sql b/db/app_uoj233.sql
index 7983cdf..1b30ada 100644
--- a/db/app_uoj233.sql
+++ b/db/app_uoj233.sql
@@ -817,6 +817,7 @@ CREATE TABLE `user_info` (
   `last_visited` timestamp NOT NULL DEFAULT 0,
   `images_size_limit` int(11) UNSIGNED NOT NULL DEFAULT 104857600, /* 100 MiB */
   `codeforces_handle` varchar(20) COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '',
+  `github` varchar(20) COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '',
   PRIMARY KEY (`username`),
   KEY `ac_num` (`ac_num`,`username`)
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4;