diff --git a/devtools/gerrit/kube/gerrit.libsonnet b/devtools/gerrit/kube/gerrit.libsonnet
index 1a466bd..8d2c61b 100644
--- a/devtools/gerrit/kube/gerrit.libsonnet
+++ b/devtools/gerrit/kube/gerrit.libsonnet
@@ -194,7 +194,7 @@
         metadata+: gerrit.metadata("ingress") {
             annotations+: {
                 "kubernetes.io/tls-acme": "true",
-                "certmanager.k8s.io/cluster-issuer": "letsencrypt-prod",
+                "cert-manager.io/cluster-issuer": "letsencrypt-prod",
                 "nginx.ingress.kubernetes.io/proxy-body-size": "0",
             },
         },
diff --git a/devtools/issues/redmine.libsonnet b/devtools/issues/redmine.libsonnet
index 2080093..5e656db 100644
--- a/devtools/issues/redmine.libsonnet
+++ b/devtools/issues/redmine.libsonnet
@@ -134,7 +134,7 @@
         metadata+: {
             annotations+: {
                 "kubernetes.io/tls-acme": "true",
-                "certmanager.k8s.io/cluster-issuer": "letsencrypt-prod",
+                "cert-manager.io/cluster-issuer": "letsencrypt-prod",
                 "nginx.ingress.kubernetes.io/proxy-body-size": "0",
             },
         },
@@ -186,7 +186,7 @@
             metadata+: {
                 annotations+: {
                     "kubernetes.io/tls-acme": "true",
-                    "certmanager.k8s.io/cluster-issuer": "letsencrypt-prod",
+                    "cert-manager.io/cluster-issuer": "letsencrypt-prod",
                     "nginx.ingress.kubernetes.io/proxy-body-size": "0",
                 },
             },