diff --git a/k8s/core/cert-manager/issuer.yaml b/k8s/core/cert-manager/issuer.yaml
index 81c2cb9..b742e41 100644
--- a/k8s/core/cert-manager/issuer.yaml
+++ b/k8s/core/cert-manager/issuer.yaml
@@ -37,4 +37,5 @@ spec:
           dnsZones:
             - "ps.hexor.cy"
             - "of.hexor.cy"
+            - "matrix.hexor.cy"