diff --git a/kubernetes/apps/cert-manager/cert-manager/issuers/helmrelease.yaml b/kubernetes/apps/cert-manager/cert-manager/issuers/helmrelease.yaml
index 04a547a..a3cae95 100644
--- a/kubernetes/apps/cert-manager/cert-manager/issuers/helmrelease.yaml
+++ b/kubernetes/apps/cert-manager/cert-manager/issuers/helmrelease.yaml
@@ -33,3 +33,4 @@ spec:
           secretKeyRef:
             name: dnsimple-api-token
             key: letsencrypt-email
+    containerPort: 8443