diff --git a/supabase/migrations/20251003182157_838b754a-633e-44ab-97ee-58dc291d0099.sql b/supabase/migrations/20251003182157_838b754a-633e-44ab-97ee-58dc291d0099.sql
new file mode 100644
index 00000000..f31265d1
--- /dev/null
+++ b/supabase/migrations/20251003182157_838b754a-633e-44ab-97ee-58dc291d0099.sql
@@ -0,0 +1,9 @@
+-- Grant INSERT permission on realtime.messages for broadcast functionality
+-- This allows SECURITY DEFINER trigger functions to insert broadcast messages
+
+GRANT INSERT ON realtime.messages TO postgres;
+GRANT INSERT ON realtime.messages TO service_role;
+
+-- Also ensure SELECT is granted for completeness
+GRANT SELECT ON realtime.messages TO postgres;
+GRANT SELECT ON realtime.messages TO service_role;
\ No newline at end of file