diff --git a/changelog.txt b/changelog.txt
index 3ef9eb1..b0571e5 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,7 @@
+Version: 2023.10.3
+
+    Updated to Unicode 15.1.0.
+
 Version: 2023.8.8
 
     Git issue 508: Regex doesn't build using CPython main (3.13.0a0)