diff --git a/configs/services/zammad.nix b/configs/services/zammad.nix
index d22ca16..593de57 100644
--- a/configs/services/zammad.nix
+++ b/configs/services/zammad.nix
@@ -7,6 +7,15 @@
     redis.createLocally = true;
   };
 
+  services.postgresql = {
+    authentication = pkgs.lib.mkOverride 10 ''
+      #type database  DBuser  auth-method
+      local zammad       zammad     trust
+      local postgres     postgres   trust
+    '';
+
+  };
+
 
   networking.firewall.allowedTCPPorts = [
     config.services.zammad.port