diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 05dc014..1434da1 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -2,6 +2,8 @@
 
 ## 2.57
 
+Added support for listening on UNIX-like sockets.
+
 Don't allow empty polls.
 
 Added support for Markdown-style images (converted to attachments) and strikethrough text.