diff --git a/data/category-olympiad-in-informatics b/data/category-olympiad-in-informatics
index 13af0b9f..bfc55645 100644
--- a/data/category-olympiad-in-informatics
+++ b/data/category-olympiad-in-informatics
@@ -18,3 +18,4 @@ rqnoj.cn
 uoj.ac
 vijos.org
 xmoj.tech
+yundouxueyuan.com