diff --git a/charts/greptimedb/Chart.yaml b/charts/greptimedb/Chart.yaml
index d38a716..f4b9478 100644
--- a/charts/greptimedb/Chart.yaml
+++ b/charts/greptimedb/Chart.yaml
@@ -2,5 +2,5 @@ apiVersion: v2
 name: greptimedb
 description: A Helm chart for deploying GreptimeDB cluster in Kubernetes
 type: application
-version: 0.1.1-alpha.11
+version: 0.1.1-alpha.12
 appVersion: 0.3.2
diff --git a/charts/greptimedb/templates/s3-credentials-sealed-secret.yaml b/charts/greptimedb/templates/s3-credentials-sealed-secret.yaml
index 1a46d36..f535672 100644
--- a/charts/greptimedb/templates/s3-credentials-sealed-secret.yaml
+++ b/charts/greptimedb/templates/s3-credentials-sealed-secret.yaml
@@ -8,7 +8,9 @@ metadata:
   namespace:  {{ .Release.Namespace }}
 spec:
   encryptedData:
-    {{- toYaml .Values.storage.s3.credentials.secretCreation.data | nindent 4 }}
+    {{- range $key, $value := .Values.storage.s3.credentials.secretCreation.data }}
+    {{ $key }}: {{ $value | quote }}
+    {{- end }}
   template:
     metadata:
       name: {{ .Values.storage.s3.credentials.secretName }}
diff --git a/charts/greptimedb/templates/s3-credentials-secret.yaml b/charts/greptimedb/templates/s3-credentials-secret.yaml
index 4c64b01..30641ce 100644
--- a/charts/greptimedb/templates/s3-credentials-secret.yaml
+++ b/charts/greptimedb/templates/s3-credentials-secret.yaml
@@ -8,7 +8,9 @@ metadata:
 kind: Secret
 type: Opaque
 data:
-  {{- toYaml .Values.storage.s3.credentials.secretCreation.data | nindent 4 }}
+  {{- range $key, $value := .Values.storage.s3.credentials.secretCreation.data }}
+  {{ $key }}: {{ $value | b64enc | quote }}
+  {{- end }}
 {{- end }}
 {{- end }}
 {{- end }}
diff --git a/charts/greptimedb/values.yaml b/charts/greptimedb/values.yaml
index 7c54e9f..fd7ae28 100644
--- a/charts/greptimedb/values.yaml
+++ b/charts/greptimedb/values.yaml
@@ -74,10 +74,13 @@ storage:
 
   # configure to use s3 storage.
   s3: {}
-#    bucket: "greptimedb"
+#    bucket: "mycluster"
 #    region: "us-west-2"
-#    root: "/data"
-#    endpoint: ""
+#
+#    # The root directory of the cluster.
+#    # The data directory in S3 will be: 's3://<bucket>/<root>/data/...'.
+#    root: "mycluster"
+#    endpoint: "s3.us-west-2.amazonaws.com"
 #    credentials:
 #      secretName: "s3-credentials"
 #      secretCreation:
@@ -86,6 +89,8 @@ storage:
 #        # Create the sealed secret.
 #        # If enableEncryption is true, the credentials should be encrypted.
 #        enableEncryption: false
+#
+#        # If the enableEncryption is true, the data should be set as encrypted data.
 #        data:
-#          access-key-id: ""
-#          secret-access-key: ""
+#          access-key-id: "you-should-set-the-access-key-id-here"
+#          secret-access-key: "you-should-set-the-secret-access-key-here"