diff --git a/CHANGES.txt b/CHANGES.txt
index 1a521817c6..19f3855721 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,7 +1,7 @@
 This file lists the major changes as they appear in the stable branch.  No
 attempt is made to keep this list accurate for the master branch.
 
-Version 21.09.0 (September ??, 2021)
+Version 21.09.0 (September 28, 2021)
   * Realm
      - Numerous bug fixes in the `gasnetex` network layer
      - Support for HIP memory type registration with GASNet (with