diff --git a/CHANGELOG.md b/CHANGELOG.md
index d027013..0d662b8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,10 @@ list yields a list of all related PRs for each release.
 
 # [unreleased]
 
+## Added
+
+- Added GPS Altitude for GPS Processed Data Dataset
+
 ## Changed
 
 - ACS mode changes: The ACS CTRL submodes are now modes. DETUBMLE is now submode of SAFE mode.