diff --git a/README.md b/README.md
index eefe63a..fd22e8a 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@
 A module that leverages Sydent's internal bind APIs to automatically record 3PIDs
 association on a Sydent instance once it's been verified on the local Synapse homeserver.
 
+This module works with Synapse v1.79.0 and above.
 
 ## Installation