diff --git a/stable/jupyterhub/templates/hub_deployment.yaml b/stable/jupyterhub/templates/hub_deployment.yaml
index 4be9d42..2d1163b 100644
--- a/stable/jupyterhub/templates/hub_deployment.yaml
+++ b/stable/jupyterhub/templates/hub_deployment.yaml
@@ -36,6 +36,10 @@ spec:
               value: "{{ .Values.s3.endpoint }}"
             - name: S3_BUCKET
               value: "{{ .Values.s3.bucket }}"
+            - name: SPAWNED_IMAGE
+              value: "{{ .Values.hub.spawned_image }}"
+            - name: CVMFS_SNAPSHOTTER
+              value: "{{ .Values.hub.cvmfs_snapshotter }}"
           image: "{{ .Values.hub.image }}"
           ports:
           - containerPort: 8888
diff --git a/stable/jupyterhub/values.yaml b/stable/jupyterhub/values.yaml
index 364f3cd..9371ff9 100755
--- a/stable/jupyterhub/values.yaml
+++ b/stable/jupyterhub/values.yaml
@@ -11,6 +11,8 @@ iam:
 hub:
     host: localhost
     image: harbor.cloud.infn.it/datacloud-templates/jhub-spark:1.2.0
+    spawned_image: harbor.cloud.infn.it/datacloud-templates/spark:1.2.0
+    cvmfs_snapshotter: false
 
 s3:
     endpoint: https://rgw.cloud.infn.it/