diff --git a/docs/reference/release-notes/uxp.md b/docs/reference/release-notes/uxp.md
index e137d878..1ee8be24 100644
--- a/docs/reference/release-notes/uxp.md
+++ b/docs/reference/release-notes/uxp.md
@@ -14,6 +14,17 @@ Any important warnings or necessary information
 - User-facing changes
 -->
 
+## v2.2.0-up.4
+
+### Release Date: 2026-04-08
+
+#### What's Changed
+
+Based on Crossplane v2.2.0.
+
+- Added FunctionRunner payload size metrics
+- Updated WebUI to v1.1.2
+
 ## v2.1.4-up.3
 
 ### Release Date: 2026-04-08