diff --git a/kube/mirko.libsonnet b/kube/mirko.libsonnet
index 5203afd..4f7d501 100644
--- a/kube/mirko.libsonnet
+++ b/kube/mirko.libsonnet
@@ -55,7 +55,7 @@
                 },
                 annotations+: {
                     "kubernetes.io/tls-acme": "true",
-                    "certmanager.k8s.io/cluster-issuer": "letsencrypt-prod",
+                    "cert-manager.io/cluster-issuer": "letsencrypt-prod",
                     [if env.ingressServerSnippet != null then "nginx.ingress.kubernetes.io/server-snippet"]: env.ingressServerSnippet,
                     [if std.length(env.extraHeaders) > 0 then "nginx.ingress.kubernetes.io/configuration-snippet"]:
                         std.join("\n", ["proxy_set_header %s;" % [h] for h in env.extraHeaders]),