diff --git a/doc/variant2/changelog.adoc b/doc/variant2/changelog.adoc
index fc14105..9080c21 100644
--- a/doc/variant2/changelog.adoc
+++ b/doc/variant2/changelog.adoc
@@ -1,5 +1,5 @@
 ////
-Copyright 2019-2022 Peter Dimov
+Copyright 2019-2025 Peter Dimov
 Distributed under the Boost Software License, Version 1.0.
 https://www.boost.org/LICENSE_1_0.txt
 ////
@@ -8,6 +8,10 @@ https://www.boost.org/LICENSE_1_0.txt
 # Revision History
 :idprefix: changelog_
 
+## Changes in 1.88.0
+
+* Use the smallest appropriate unsigned type for the index.
+
 ## Changes in 1.83.0
 
 * Added `uses_double_storage()`.