diff --git a/CHANGELOG_APP.md b/CHANGELOG_APP.md
index cfa4888..3cc70b8 100644
--- a/CHANGELOG_APP.md
+++ b/CHANGELOG_APP.md
@@ -2,6 +2,16 @@
 
 All notable changes to the VTracer desktop app will be documented in this file.
 
+## 1.0.0-alpha.4 - Build 166 - 2026-09-16
+
+### Added
+
+* VTracer 2 now picks the optimal Gradient Step on first trace
+
+### Fixed
+
+* Remove Background stayed on but stopped showing on the canvas after switching tabs.
+
 ## 1.0.0-alpha.4 - Build 161 - 2026-09-12
 
 ### Added