diff --git a/docs/enhanced-configuration/self-signed-certificates.md b/docs/enhanced-configuration/self-signed-certificates.md
index 4d688872..e3c6dc27 100644
--- a/docs/enhanced-configuration/self-signed-certificates.md
+++ b/docs/enhanced-configuration/self-signed-certificates.md
@@ -98,6 +98,8 @@ multiple namespaces in a cluster.
         name: selfsigned-issuer
         kind: ClusterIssuer
         group: cert-manager.io
+      duration: 87600h # 10y
+      renewBefore: 87599h
     ```
 
 1. Copy this cert's secret into the/each namespace you want to make use of the cert.