diff --git a/changelog.txt b/changelog.txt
index f9a8cda9..903e3062 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -4,6 +4,7 @@ OPENSEADRAGON CHANGELOG
 1.2.1: (in progress)
 
 * Added preserveOverlays option (#561)
+* Fixed: DZI tilesource was broken (#563)
 
 1.2.0: