diff --git a/CHANGES.txt b/CHANGES.txt
index 22d8808..39d32ef 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -22,4 +22,4 @@ v2021.4.2, 2021-02-22 -- New 'config flow' component (new 'alert_id').
 v2021.4.3, 2021-02-24 -- New 'config flow' component (uses new api v0.3.7).
 v2021.4.4, 2021-02-24 -- (NOT RELEASED).
 v2021.5.0, 2021-02-26 -- Improved user expirence (uses new api v0.3.8).
-v2021.5.1, 2021-02-26 -- TENTATIVE
+v2021.5.1, 2021-03-01 -- Improved user expirence (no ISO codes).