diff --git a/changelog.txt b/changelog.txt
index 8030065c..388fca3d 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -3,7 +3,8 @@ OPENSEADRAGON CHANGELOG
 
 3.2.0: (in progress...)
 
-* NEW BEHAVIOR: Setting the viewport rotation now animates by default (pass false for the new immediately parameter to disable) (#2136 @jonasengelmann)
+* NEW BEHAVIOR: Setting the viewport rotation now animates by default (pass false for the new `immediately` parameter to disable) (#2136 @jonasengelmann)
+* NEW BEHAVIOR: The auto resize now takes both width and height into account when scaling the contents proportionally to the viewer (#2256 @pearcetm)
 * DEPRECATION: Don't access the viewport's degrees property directly anymore; instead use setRotation and getRotation (#2136 @jonasengelmann)
 * New gesture: Double-click and drag to zoom (on by default for touch) (#2225 @HamzaTatheer)
 * You can now provide a pivot point when rotating the viewport (#2233 #2253 @pearcetm)
@@ -13,6 +14,7 @@ OPENSEADRAGON CHANGELOG
 * We now delegate tile fetching and caching to the TileSource, to allow for custom tile formats (#2148 @Aiosa)
 * Added support for dynamic URLs from tile sources (#2247 @JohnReagan)
 * The viewer now emits before-destroy and destroy events (#2239 @pearcetm)
+* Auto resize detection is now more efficient (#2256 @pearcetm)
 * Improved documentation (#2211 @shyamkumaryadav)
 * Fixed: Cropping tiled images with polygons was broken (#2183 @altert)
 * Fixed: Boundary constraints were wrong when the viewport was rotated (#2249 @pearcetm)