diff --git a/.github/workflows/domain-schema.json b/.github/workflows/domain-schema.json
index 2fdbfa1..451301c 100644
--- a/.github/workflows/domain-schema.json
+++ b/.github/workflows/domain-schema.json
@@ -7,7 +7,7 @@
     },
     "url": {
       "type": "string",
-      "pattern": "^(https?://)?(?:[a-zA-Z-]+\\.){1,}(?:[a-zA-Z-]{2,})\\/?$"
+      "pattern": "^(https?://)?(?:[a-zA-Z0-9-]+\\.){1,}(?:[a-zA-Z0-9-]{2,})\\/?$"
     },
     "email": {
       "type": "string",