diff --git a/apps/networking/certmanager/certificate.yml b/apps/networking/certmanager/certificate.yml
index 62091e3..670f710 100644
--- a/apps/networking/certmanager/certificate.yml
+++ b/apps/networking/certmanager/certificate.yml
@@ -5,6 +5,9 @@ metadata:
   namespace: cert-manager
 spec:
   secretName: cm-shared-wildcard-vulfhaus-tls
+  additionalOutputFormats:
+    - type: CombinedPEM
+    - type: DER
   dnsNames:
     - "vulf.haus"
     - "*.vulf.haus"