diff --git a/CHANGELOG.md b/CHANGELOG.md
index c794bbaf05591b68d3626806b10b24df57968842..5864dd20d8beb600b6df4298c0cfff0f4d601ea3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,8 @@
 
 ## 0.15.22 - 2024-06-27
 
+* Update nextcloud helm chart to 4.6.4.
+  - In particular this upgrades Nextcloud to 28.0.4.
 * Keep app store disabled during setup script, to prevent apps from
   unintentionally upgrading beyond their pinned versions.
 * Template setup-apps script from helm upgrade job instead of from Nextcloud
diff --git a/values.yaml b/values.yaml
index 5422603efa04317b273ca538e9324737eac641cb..2e9648b14b91c757da5a84f3801fff15c75c144b 100644
--- a/values.yaml
+++ b/values.yaml
@@ -50,7 +50,7 @@ apps:
     # then version
     enabled: true
     github_repository: ONLYOFFICE/onlyoffice-nextcloud
-    version: v9.0.0
+    version: v9.3.0
     release_filename: onlyoffice.tar.gz
 
 setupApps: