diff --git a/charts/rdkitCatridgePostgres/Chart.yaml b/charts/rdkitCatridgePostgres/Chart.yaml
index 5ab1389..56918c1 100644
--- a/charts/rdkitCatridgePostgres/Chart.yaml
+++ b/charts/rdkitCatridgePostgres/Chart.yaml
@@ -1,6 +1,9 @@
 apiVersion: v2
 name: rdkitcatridgepostgres
 description: A Helm chart for Kubernetes
+maintainers:
+  - name: Nisha Sharma
+    email: nisha.sharma@uni-jena.de
 
 # A chart can be either an 'application' or a 'library' chart.
 #
@@ -15,7 +18,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.1.0
+version: 0.2.0
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
diff --git a/charts/rdkitCatridgePostgres/templates/statefulset.yaml b/charts/rdkitCatridgePostgres/templates/statefulset.yaml
index 9ebf65f..dab6a37 100644
--- a/charts/rdkitCatridgePostgres/templates/statefulset.yaml
+++ b/charts/rdkitCatridgePostgres/templates/statefulset.yaml
@@ -27,6 +27,12 @@ spec:
       {{- end }}
       securityContext:
         {{- toYaml .Values.podSecurityContext | nindent 8 }}
+{{- if .Values.persistence.existingClaim }}
+      volumes:
+      - name: {{ .Values.volume.name }}
+        persistentVolumeClaim:
+          claimName: {{ .Values.persistence.existingClaim }}
+{{- end }}
       containers:
         - name: {{ .Chart.Name }}
           securityContext:
@@ -44,11 +50,15 @@ spec:
           - name: {{ .Values.volume.name }}
             mountPath: {{ .Values.volume.mountpath }}
             subPath: postgres
+{{- if not .Values.persistence.existingClaim }}
   volumeClaimTemplates:
-  - metadata:
-      name: {{ .Values.volume.name }}
+  - apiVersion: v1
+    kind: PersistentVolumeClaim
+    metadata:
+        name: {{ .Values.volume.name }}
     spec:
-      accessModes: [ "ReadWriteOnce" ]
+      accessModes: [ "ReadWriteOnce" ] 
       resources:
         requests:
           storage: {{ .Values.volume.size }}
+{{- end }}
diff --git a/charts/rdkitCatridgePostgres/values.yaml b/charts/rdkitCatridgePostgres/values.yaml
index 5697f1e..759e901 100644
--- a/charts/rdkitCatridgePostgres/values.yaml
+++ b/charts/rdkitCatridgePostgres/values.yaml
@@ -45,8 +45,8 @@ EnvSecretRef:
 
 auth:
   pgPassword: secret
-  db: test
-  user: test
+  db: db
+  user: user
   postgresPassword: secret
 
 ingress:
@@ -81,9 +81,11 @@ volume:
   name: postgres-data
   mountpath: /var/lib/postgresql/data
   size: 5Gi
-  accessModes: ReadWriteMany
   hostPath: /mnt/data
-  storageClass: standard
+
+## Name of an existing PVC to use.
+persistence:
+  existingClaim:
 
 autoscaling:
   enabled: false