diff --git a/CHANGELOG.md b/CHANGELOG.md
index b44e9e8c2..ebb9e706f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@ All notable changes to this project will be documented in this file[^1].
 
 ## [Unreleased]
 
+## [2.78.0] - 2023-07-21
+### Added
+- images->deep_zoom_url to /api/v2/items/{id}
+
 ## [2.77.0] - 2023-06-09
 ### Added
 - image_ratio field to /api/v2/items/{id}