diff --git a/cert-manager/base/cert-manager-issuer.yml b/cert-manager/base/cert-manager-issuer.yml
index 4b999fb..b807b04 100644
--- a/cert-manager/base/cert-manager-issuer.yml
+++ b/cert-manager/base/cert-manager-issuer.yml
@@ -2,6 +2,7 @@ apiVersion: cert-manager.io/v1
 kind: ClusterIssuer
 metadata:
   name: letsencrypt
+  namespace: kube-system
 spec:
   acme:
     # The ACME server URL