diff --git a/CHANGELOG.md b/CHANGELOG.md
index f7b5305..f17bf36 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,9 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
-Nothing yet.
+### Performance
+
+- Avoid stringifying long lists that will definitely be truncated in the repr (~20% speedup when testing with a 25-image Sentinel-2 collection)
 
 ## [0.1.0] - 2025-01-10