diff --git a/chartpress.yaml b/chartpress.yaml
index c4009f5..004e977 100644
--- a/chartpress.yaml
+++ b/chartpress.yaml
@@ -10,5 +10,5 @@ charts:
         valuesPath: image
         buildArgs:
           # keep in sync with appVersion in Chart.yaml
-          kbatch_version: "0.4.2"
+          kbatch_version: "0.5.0a1"
       
diff --git a/kbatch/Chart.yaml b/kbatch/Chart.yaml
index b2cf2bd..f15270d 100644
--- a/kbatch/Chart.yaml
+++ b/kbatch/Chart.yaml
@@ -3,4 +3,5 @@ name: kbatch-proxy
 description: A Helm chart for kbatch-proxy
 type: application
 version: 0.0.1-set.by.chartpress
-appVersion: "0.4.2"
+# sync with chartpress.yaml
+appVersion: "0.5.0a1"