diff --git a/CHANGES.md b/CHANGES.md
index aac667db1e7..b170b3bef8a 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -7,6 +7,7 @@ Change Log
 * Fixed a bug where Cesium would fail to load under Node.js and some webpack configurations. [#5593](https://github.com/AnalyticalGraphicsInc/cesium/issues/5593)
 * Fixed a bug where a Model's compressed textures were not being displayed. [#5596](https://github.com/AnalyticalGraphicsInc/cesium/pull/5596)
 * Fixed documentation for `OrthographicFrustum`. [#5586](https://github.com/AnalyticalGraphicsInc/cesium/issues/5586)
+* Zoom about mouse now maintains camera heading, pitch, and roll [#4639](https://github.com/AnalyticalGraphicsInc/cesium/pull/5603)
 
 ### 1.35.1 - 2017-07-05