diff --git a/changelog.txt b/changelog.txt
index d62a3a33..42979ad6 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -9,6 +9,11 @@ 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 support for non-square tiles (#673)
+    * TileSource.Options objects can now optionally provide tileWidth/tileWidth instead of tileSize for non-square tile support.
+    * IIIFTileSources will now respect non-square tiles if available.
+    * DEPRECATION: TileSource.getTileSize is deprecated use TileSource.getTileWidth and TileSource.getTileHeight instead.
+
 
 2.0.0: