diff --git a/.changeset/friendly-coins-develop.md b/.changeset/friendly-coins-develop.md
new file mode 100644
index 00000000..1dce8b0c
--- /dev/null
+++ b/.changeset/friendly-coins-develop.md
@@ -0,0 +1,5 @@
+---
+"octopus-deploy": patch
+---
+
+Update appVersion to 2025.4
diff --git a/charts/octopus-deploy/Chart.yaml b/charts/octopus-deploy/Chart.yaml
index baddcf48..023a7012 100644
--- a/charts/octopus-deploy/Chart.yaml
+++ b/charts/octopus-deploy/Chart.yaml
@@ -10,7 +10,7 @@ version: 1.8.0
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
-appVersion: "2025.3"
+appVersion: "2025.4"
 dependencies:
   - name: mssql
     condition: mssql.enabled