diff --git a/Source/domainset/cdn.conf b/Source/domainset/cdn.conf
index bc5d9e94..3ae82302 100644
--- a/Source/domainset/cdn.conf
+++ b/Source/domainset/cdn.conf
@@ -2364,3 +2364,4 @@ cdn.ywxi.net
 .ezocdn.net
 .ezocdn.com
 static.reo.dev
+assets.buttondown.email