diff --git a/utils/generate-domains-blocklists/domains-allowlist.txt b/utils/generate-domains-blocklists/domains-allowlist.txt
index 6812e4e0..12e38b3f 100644
--- a/utils/generate-domains-blocklists/domains-allowlist.txt
+++ b/utils/generate-domains-blocklists/domains-allowlist.txt
@@ -36,6 +36,7 @@ labarchitects.com
 lan
 liveinternet.ru
 localdomain
+localhost
 login.microsoftonline.com
 login.yahoo.com
 mdidesign.ca