diff --git a/changelog.txt b/changelog.txt
index d62a3a33..e42893fb 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -9,6 +9,7 @@ OPENSEADRAGON CHANGELOG
 * Fixed flickering tiles with useCanvas=false when no cache is used (#661)
 * Added additional coordinates conversion methods to TiledImage (#662)
 * 'display: none' no longer gets reset on overlays during draw (#668)
+* Added `preserveImageSizeOnResize` option (#666)
 
 2.0.0: