diff --git a/domains/_github-pages-challenge-ysnyuki2321.json b/domains/_github-pages-challenge-ysnyuki2321.json
deleted file mode 100644
index 7bde3c3415..0000000000
--- a/domains/_github-pages-challenge-ysnyuki2321.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-    "owner": {
-        "username": "ysnyuki2321",
-        "email": "ysnyuki2321@outlook.jp"
-    },
-    "records": {
-        "TXT": "be315717c887ffb2572e670f992c15"
-    }
-}