diff --git a/changelog.txt b/changelog.txt
index 2b3306e2..b0dadbcc 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -6,6 +6,7 @@ OPENSEADRAGON CHANGELOG
 * Improved overlay handling so it plays better with other libraries (#2582 @BeebBenjamin)
 * Fixed: If you switched from WebGL drawer to canvas drawer, it didn't clean up properly (#2570 @pearcetm)
 * Fixed: TiledImage.setClip would sometimes leave tiles unloaded (#2590 @pearcetm)
+* Fixed: The WebGL drawer didn't support viewportMargins (#2600 @pearcetm)
 
 5.0.0: