diff --git a/bootstrap/templates/ansible/playbooks/templates/custom-cilium-helmchart.yaml.j2.j2 b/bootstrap/templates/ansible/playbooks/templates/custom-cilium-helmchart.yaml.j2.j2
index 5db35111d..fea3d25a4 100644
--- a/bootstrap/templates/ansible/playbooks/templates/custom-cilium-helmchart.yaml.j2.j2
+++ b/bootstrap/templates/ansible/playbooks/templates/custom-cilium-helmchart.yaml.j2.j2
@@ -10,7 +10,7 @@ spec:
   # renovate: datasource=helm
   repo: https://helm.cilium.io/
   chart: cilium
-  version: 1.15.0
+  version: 1.15.4
   targetNamespace: kube-system
   bootstrap: true
   valuesContent: |-
diff --git a/bootstrap/templates/kubernetes/apps/kube-system/cilium/app/helmrelease.yaml.j2 b/bootstrap/templates/kubernetes/apps/kube-system/cilium/app/helmrelease.yaml.j2
index 9fbf796b0..ee991a571 100644
--- a/bootstrap/templates/kubernetes/apps/kube-system/cilium/app/helmrelease.yaml.j2
+++ b/bootstrap/templates/kubernetes/apps/kube-system/cilium/app/helmrelease.yaml.j2
@@ -9,7 +9,7 @@ spec:
   chart:
     spec:
       chart: cilium
-      version: 1.15.0
+      version: 1.15.4
       sourceRef:
         kind: HelmRepository
         name: cilium