diff --git a/coec/custom/fleet.yaml b/coec/custom/fleet.yaml
index bed396cbfdf29e9018f886039e7d8e42b4fdad81..7dee78d8a73eab858fe79534c2b7309a77938363 100644
--- a/coec/custom/fleet.yaml
+++ b/coec/custom/fleet.yaml
@@ -35,15 +35,12 @@ helm:
     customConfig:
       services:
         JupyterLab:
-          defaultOption: "4.3"
-          "4.3":
-            allowedLists:
-              systems:
-                - JURECA
-                - JUWELS
-                - JEDI
-                - JUSUF
-                - JSC-Cloud
+          "4.2":
+            enabled: false
+          "3.6":
+            enabled: false
+          "xpra":
+            enabled: false
 targetCustomizations:
   - name: jupyter-stag
     clusterSelector:
diff --git a/coeraise/custom/fleet.yaml b/coeraise/custom/fleet.yaml
index b3c5a5a73f073e24f4c0f305364ff9d6bb08ac61..0219efb5b9aab2ab59558089a136094b36ee2201 100644
--- a/coeraise/custom/fleet.yaml
+++ b/coeraise/custom/fleet.yaml
@@ -33,6 +33,15 @@ helm:
       syslog:
         enabled: true
         level: 10
+    customConfig:
+      services:
+        JupyterLab:
+          "4.2":
+            enabled: false
+          "3.6":
+            enabled: false
+          "xpra":
+            enabled: false
 targetCustomizations:
   - name: jupyter-stag
     clusterSelector:
diff --git a/euroccgcs/custom/fleet.yaml b/euroccgcs/custom/fleet.yaml
index 8198a0a069e6056aaa1de3ffb035fa152608c731..1195121cd16e3b63d5dde7ba2d5a840a9a07e704 100644
--- a/euroccgcs/custom/fleet.yaml
+++ b/euroccgcs/custom/fleet.yaml
@@ -32,18 +32,17 @@ helm:
       syslog:
         enabled: true
         level: 10
+    customConfig:
+      services:
     customConfig:
       services:
         JupyterLab:
-          defaultOption: "4.3"
-          "4.3":
-            allowedLists:
-              systems:
-                - JURECA
-                - JUWELS
-                - JEDI
-                - JUSUF
-                - JSC-Cloud
+          "4.2":
+            enabled: false
+          "3.6":
+            enabled: false
+          "xpra":
+            enabled: false
 targetCustomizations:
   - name: jupyter-stag
     clusterSelector:
diff --git a/nfdigeneral/custom/fleet.yaml b/nfdigeneral/custom/fleet.yaml
index 62a6f596450f0f89102c8f0d9e5048295f62cbd7..7491accb9e906409d05104a946ec6b3d53266f87 100644
--- a/nfdigeneral/custom/fleet.yaml
+++ b/nfdigeneral/custom/fleet.yaml
@@ -34,9 +34,6 @@ helm:
         enabled: true
         level: 10
     customConfig:
-      backendServices:
-        outpostKubeJSCCloud:
-          pollInterval: 180
       services:
         JupyterLab:
           defaultOption: "4.3"
diff --git a/portalgauss/custom/fleet.yaml b/portalgauss/custom/fleet.yaml
index 608d7459c1904f845c1c93033d4cc3521a5748e7..c26509b176623b1f2eb67cf9bd62c67f3e7fdf13 100644
--- a/portalgauss/custom/fleet.yaml
+++ b/portalgauss/custom/fleet.yaml
@@ -35,7 +35,6 @@ helm:
     customConfig:
       services:
         JupyterLab:
-          defaultOption: default
           default:
             enabled: true
           "3.6":