diff --git a/Chart.yaml b/Chart.yaml
index dd7ec85..74fae67 100644
--- a/Chart.yaml
+++ b/Chart.yaml
@@ -2,8 +2,8 @@ apiVersion: v2
 name: postfixadmin
 description: Helm chart for postfixadmin
 type: application
-version: 0.1.0
-appVersion: 3.3.10
+version: "0.1.0"
+appVersion: "3.3.10"
 icon: https://a.fsdn.com/allura/p/postfixadmin/icon?1620415130
 
 keywords:
diff --git a/renovate.json b/renovate.json
new file mode 100644
index 0000000..1843f08
--- /dev/null
+++ b/renovate.json
@@ -0,0 +1,19 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "automergeStrategy": "merge-commit",
+  "automergeType": "pr",
+  "assignees": [ "volker.raschek" ],
+  "regexManagers": [
+    {
+      "description": "Update container image reference",
+      "fileMatch": [
+        "^Chart\\.yaml$"
+      ],
+      "matchStrings": [
+        "appVersion: \"(?<currentValue>.*?)\"\\s+"
+      ],
+      "depNameTemplate": "docker.io/volkerraschek/postfixadmin",
+      "datasourceTemplate": "docker"
+    }
+  ]
+}
\ No newline at end of file