diff --git a/changelog.txt b/changelog.txt
index e6d4002b..229e03cc 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -37,6 +37,7 @@ OPENSEADRAGON CHANGELOG
     * Viewport.open supports positioning config properties
     * For multi-image open, drawing isn't started until all tileSources have been opened
     * You can specify a clip area for each image (only works on browsers that support the HTML5 canvas) (#594)
+    * Added placeholderFillStyle so image rectangles can be drawn even before their tiles load (#635)
 * Margins option to push the home region in from the edges of the Viewer (#505)
 * Rect and Point toString() functions are now consistent: rounding values to nearest hundredth
 * Overlays appear in the DOM immediately on open or addOverlay (#507)