diff --git a/class/cert-manager.yml b/class/cert-manager.yml
index 3af163af..2efcd676 100644
--- a/class/cert-manager.yml
+++ b/class/cert-manager.yml
@@ -20,6 +20,7 @@ parameters:
         helm_params:
           name: cert-manager
           namespace: ${cert_manager:namespace}
+          kube_version: ${cert_manager:kubernetes_version}
       - output_path: cert-manager/
         input_type: jsonnet
         output_type: yaml
diff --git a/class/defaults.yml b/class/defaults.yml
index dd15c8ac..97c44a13 100644
--- a/class/defaults.yml
+++ b/class/defaults.yml
@@ -1,6 +1,10 @@
 parameters:
   cert_manager:
     namespace: syn-cert-manager
+
+    # Used when rendering the Helm chart
+    kubernetes_version: "1.27"
+
     dns01-recursive-nameservers: "1.1.1.1:53"
     charts:
       cert-manager: v1.13.5