diff --git a/changelog.txt b/changelog.txt
index 1adeefd1..4fd0d725 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -16,6 +16,7 @@ OPENSEADRAGON CHANGELOG
 * Made MouseTracker more robust in certain scenarios (#2134 @Aiosa)
 * Exposed TiledImage's private functions for better maintainability (#2134 @Aiosa)
 * Fixed an issue where full page mode wouldn't grow properly if you resized the window (#2100 @TanukiSharp)
+* Tile cache keys are now generated by the tile source, so it's easier to override them as needed (#2138 @Aiosa)
 
 3.0.0: