diff --git a/k8s/helm_charts2/Chart.yaml b/k8s/helm_charts2/Chart.yaml
index e58da462c..cc23880e2 100644
--- a/k8s/helm_charts2/Chart.yaml
+++ b/k8s/helm_charts2/Chart.yaml
@@ -1,5 +1,5 @@
 apiVersion: v1
 description: SeaweedFS
 name: seaweedfs
-appVersion: "3.20"
-version: "3.20"
+appVersion: "3.21"
+version: "3.21"
diff --git a/weed/util/constants.go b/weed/util/constants.go
index 67458d9ea..828848370 100644
--- a/weed/util/constants.go
+++ b/weed/util/constants.go
@@ -5,7 +5,7 @@ import (
 )
 
 var (
-	VERSION_NUMBER = fmt.Sprintf("%.02f", 3.20)
+	VERSION_NUMBER = fmt.Sprintf("%.02f", 3.21)
 	VERSION        = sizeLimit + " " + VERSION_NUMBER
 	COMMIT         = ""
 )