diff --git a/charts/openstack-cloud-controller-manager/Chart.yaml b/charts/openstack-cloud-controller-manager/Chart.yaml
index d744f1a0e5..9ab1ed5293 100644
--- a/charts/openstack-cloud-controller-manager/Chart.yaml
+++ b/charts/openstack-cloud-controller-manager/Chart.yaml
@@ -4,7 +4,7 @@ description: Openstack Cloud Controller Manager Helm Chart
 icon: https://object-storage-ca-ymq-1.vexxhost.net/swift/v1/6e4619c416ff4bd19e1c087f27a43eea/www-images-prod/openstack-logo/OpenStack-Logo-Vertical.png
 home: https://github.com/kubernetes/cloud-provider-openstack
 name: openstack-cloud-controller-manager
-version: 2.29.0-alpha.3
+version: 2.29.0-alpha.4
 maintainers:
   - name: eumel8
     email: f.kloeker@telekom.de
diff --git a/charts/openstack-cloud-controller-manager/README.md b/charts/openstack-cloud-controller-manager/README.md
index af837af82b..77c224bbf2 100644
--- a/charts/openstack-cloud-controller-manager/README.md
+++ b/charts/openstack-cloud-controller-manager/README.md
@@ -21,12 +21,40 @@ If you want to enable health checks for your Load Balancers (optional), set `clo
 
 Then run:
 
-```
+```sh
 helm repo add cpo https://kubernetes.github.io/cloud-provider-openstack
 helm repo update
 helm install openstack-ccm cpo/openstack-cloud-controller-manager --values openstack-ccm.yaml
 ```
 
+## Using an external secret
+
+In order to use an external secret for the OCCM:
+
+```yaml
+secret:
+  enabled: true
+  name: cloud-config
+  create: false
+```
+
+Create the secret with:
+
+```sh
+kubectl create secret -n kube-system generic cloud-config --from-file=./cloud.conf
+```
+
+## Tolerations
+
+To deploy OCCM to worker nodes only (e.g. when the controlplane is isolated), adjust the tolerations in the chart:
+
+```yaml
+tolerations:
+  - key: node.cloudprovider.kubernetes.io/uninitialized
+    value: "true"
+    effect: NoSchedule
+```
+
 ## Unsupported configurations
 
 - The chart does not support the mounting of custom `clouds.yaml` files. Therefore, the following config values in the `[Global]` section won’t have any effect: