diff --git a/democratic-csi/democratic-csi.yaml b/democratic-csi/democratic-csi.yaml
index 360b539..0580dbf 100644
--- a/democratic-csi/democratic-csi.yaml
+++ b/democratic-csi/democratic-csi.yaml
@@ -270,6 +270,34 @@ spec:
             fieldRef:
               apiVersion: v1
               fieldPath: metadata.name
+      - name: external-resizer
+        image: "registry.k8s.io/sig-storage/csi-resizer:v1.9.0"
+        args:
+        - --v=5
+        - --leader-election
+        - --leader-election-namespace=democratic-csi
+        - --timeout=90s
+        - --workers=10
+        - --csi-address=/csi-data/csi.sock
+        volumeMounts:
+        - mountPath: /csi-data
+          name: socket-dir
+        env:
+        - name: NODE_NAME
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: spec.nodeName
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: metadata.namespace
+        - name: POD_NAME
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: metadata.name
       # https://github.com/kubernetes-csi/external-snapshotter
       # beware upgrading version:
       #  - https://github.com/rook/rook/issues/4178
diff --git a/democratic-csi/storageclass.yaml b/democratic-csi/storageclass.yaml
index 1bf9318..8f4c475 100644
--- a/democratic-csi/storageclass.yaml
+++ b/democratic-csi/storageclass.yaml
@@ -2,6 +2,7 @@ apiVersion: storage.k8s.io/v1
 kind: StorageClass
 metadata:
   name: synology-iscsi
+allowVolumeExpansion: true
 provisioner: org.democratic-csi.iscsi-synology
 parameters:
   fsType: xfs