diff --git a/changelog.txt b/changelog.txt
index 48f076a5..46e84e18 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -7,6 +7,7 @@ OPENSEADRAGON CHANGELOG
 * Breaking change: MouseTracker event handler method signatures changed to 'handlerMethod( tracker, eventData)' (#23)
 * MouseTracker now supports an optional 'moveHandler' method for tracking mousemove events (#215)
 * Fixed: Element-relative mouse coordinates now correct if the element and/or page is scrolled (using new OpenSeadragon.getElementOffset() method) (#131)
+* Renamed EventHandler to EventSource (#225)
 
 0.9.131: