diff --git a/30-cert-manager/51-pomerium-production-issuer.yaml b/30-cert-manager/51-pomerium-production-issuer.yaml
--- a/30-cert-manager/51-pomerium-production-issuer.yaml
+++ b/30-cert-manager/51-pomerium-production-issuer.yaml
@@ -2,7 +2,7 @@ apiVersion: cert-manager.io/v1
 kind: Issuer
 metadata:
   name: letsencrypt-prod
-  namespace: default
+  namespace: pomerium
 spec:
   acme:
     # The ACME server URL
diff --git a/30-cert-manager/51-pomerium-staging-issuer.yaml b/30-cert-manager/51-pomerium-staging-issuer.yaml
--- a/30-cert-manager/51-pomerium-staging-issuer.yaml
+++ b/30-cert-manager/51-pomerium-staging-issuer.yaml
@@ -2,7 +2,7 @@ apiVersion: cert-manager.io/v1
 kind: Issuer
 metadata:
   name: letsencrypt-staging
-  namespace: default
+  namespace: pomerium
 spec:
   acme:
     # The ACME server URL