diff --git a/admin/migrate_argo_values.py b/admin/migrate_argo_values.py
index 680d723..04322ba 100755
--- a/admin/migrate_argo_values.py
+++ b/admin/migrate_argo_values.py
@@ -8,11 +8,6 @@ import yaml
 def migrate(values):
     """Actual changes here"""
 
-    # Remove various keys as they have been merged into the metrics template
-    deleteKey(values["metrics"]['kube-prometheus-stack']["alertmanager"]["alertmanagerSpec"], "podMetadata")
-    deleteKey(values["metrics"]['kube-prometheus-stack']["alertmanager"], "config")
-    deleteKey(values["metrics"]['kube-prometheus-stack']["prometheus"]["prometheusSpec"], "externalLabels")
-        
     return values
 
 
diff --git a/admin/upgrade_cluster.sh b/admin/upgrade_cluster.sh
index 1256e56..4f95248 100755
--- a/admin/upgrade_cluster.sh
+++ b/admin/upgrade_cluster.sh
@@ -1,7 +1,9 @@
-#!/bin/bash -e
+#!/bin/bash
+set -eE
+set -o pipefail
 
 #VERSION="latest"
-VERSION="v1.25"
+VERSION="v1.26"
 ARGO_APP=${1:-/tmp/new-kubezero-argoapp.yaml}
 
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
@@ -147,14 +149,6 @@ argo_used && disable_argo
 
 #all_nodes_upgrade ""
 
-# Cleanup
-# Remove calico CRDs
-kubectl delete -f https://git.zero-downtime.net/ZeroDownTime/kubezero/raw/tag/v1.23.11/charts/kubezero-network/charts/calico/crds/crds.yaml 2>/dev/null || true
-kubectl delete servicemonitor calico-node -n kube-system 2>/dev/null || true
-
-# delete old kubelet configs
-for cm in $(kubectl get cm -n kube-system --no-headers |  awk '{if ($1 ~ "kubelet-config-1*") print $1}'); do kubectl delete cm $cm -n kube-system; done
-for rb in $(kubectl get rolebindings -n kube-system --no-headers |  awk '{if ($1 ~ "kubelet-config-1*") print $1}'); do kubectl delete rolebindings $rb -n kube-system; done
 
 control_plane_upgrade kubeadm_upgrade