diff --git a/CHANGES.md b/CHANGES.md
index 0fcfb3c78..693204584 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,7 +1,7 @@
 Synapse 1.49.1 (2021-12-21)
 ===========================
 
-This release fixes a regression introduced in Synapse 1.49.0 which could cause `/sync` requests to take significantly longer. This would particularly affect "initial" syncs for users participating in a large number of rooms, and in extreme cases, could make it imposssible for such users to log in on a new client.
+This release fixes a regression introduced in Synapse 1.49.0 which could cause `/sync` requests to take significantly longer. This would particularly affect "initial" syncs for users participating in a large number of rooms, and in extreme cases, could make it impossible for such users to log in on a new client.
 
 Bugfixes
 --------