diff --git a/utils/invalid-domains.json b/utils/invalid-domains.json
index 193ee41e5..f095ac8e3 100644
--- a/utils/invalid-domains.json
+++ b/utils/invalid-domains.json
@@ -2,7 +2,6 @@
   "_acme-challenge",
   "_discord",
   "_dmarc",
-  "_github-challenge-is-a-dev",
   "_github-pages-challenge-is-a-dev",
   "_gitlab-pages-verification-code",
   "help",