diff --git a/proposals/0000-keep-alive-state-events.md b/proposals/4140-expiring-events-with-keep-alive-endpoint.md
similarity index 98%
rename from proposals/0000-keep-alive-state-events.md
rename to proposals/4140-expiring-events-with-keep-alive-endpoint.md
index 6eeb05865..b49671a35 100644
--- a/proposals/0000-keep-alive-state-events.md
+++ b/proposals/4140-expiring-events-with-keep-alive-endpoint.md
@@ -1,4 +1,4 @@
-# MSC0000: Expiring events with keep alive functionality
+# MSC4140: Expiring events with keep alive endpoint
 
 Currently there is not mechanism for a client to provide a reliable way of
 communicating that an event is still valid. The best expiration method is to post