diff --git a/argocd/system/cert-manager/templates/ionos-externalsecret.yaml b/argocd/system/cert-manager/templates/ionos-externalsecret.yaml
index 01b0753b..52c117b8 100644
--- a/argocd/system/cert-manager/templates/ionos-externalsecret.yaml
+++ b/argocd/system/cert-manager/templates/ionos-externalsecret.yaml
@@ -11,13 +11,13 @@ spec:
   target:
     name: ionos-secret
   data:
-  - secretKey: 156db4ef856a4df69ab4358393e6b344
+  - secretKey: IONOS_PUBLIC_PREFIX
     remoteRef:
       key: certmanager/ionos
       property: public_prefix
       conversionStrategy: Default # ArgoCD sync issue
       decodingStrategy: None # ArgoCD sync issue
-  - secretKey: ymjvvRazlbO9rSf87OrR46jPGw_iM05bJocdCBlg2VJI9vjx3ErUl6h9A_IkMgOkl8LFQ549aeDWkb619UgQ7w
+  - secretKey: IONOS_SECRET
     remoteRef:
       key: certmanager/ionos
       property: secret
diff --git a/argocd/system/cert-manager/templates/ionos-issuer.yaml b/argocd/system/cert-manager/templates/ionos-issuer.yaml
index 86e779c6..090d899c 100644
--- a/argocd/system/cert-manager/templates/ionos-issuer.yaml
+++ b/argocd/system/cert-manager/templates/ionos-issuer.yaml
@@ -24,10 +24,10 @@ spec:
             config:
               apiUrl: https://api.hosting.ionos.com/dns/v1
               publicKeySecretRef:
-                key: 156db4ef856a4df69ab4358393e6b344
+                key: IONOS_PUBLIC_PREFIX
                 name: ionos-secret
               secretKeySecretRef:
-                key: ymjvvRazlbO9rSf87OrR46jPGw_iM05bJocdCBlg2VJI9vjx3ErUl6h9A_IkMgOkl8LFQ549aeDWkb619UgQ7w
+                key: IONOS_SECRET
                 name: ionos-secret
 {{- end -}}
 {{- end -}}