diff --git a/packages/reservation-platform/docker/caddy/Caddyfile b/packages/reservation-platform/docker/caddy/Caddyfile
index 1bcc050..a3140d8 100644
--- a/packages/reservation-platform/docker/caddy/Caddyfile
+++ b/packages/reservation-platform/docker/caddy/Caddyfile
@@ -1,5 +1,5 @@
 {
-    acme_ca https://acme.zerossl.com/v2/DV90
+    acme_ca https://acme.app.corpintra.net/acme/ws/Acme.svc/InternalWebserverACME/directory
     email   torben.haack@mercedes-benz.com
 }