diff --git a/data/category-olympiad-in-informatics b/data/category-olympiad-in-informatics
index 2f9cc411..13af0b9f 100644
--- a/data/category-olympiad-in-informatics
+++ b/data/category-olympiad-in-informatics
@@ -17,3 +17,4 @@ openjudge.cn
 rqnoj.cn
 uoj.ac
 vijos.org
+xmoj.tech