diff --git a/magpie/configuration.nix b/magpie/configuration.nix
index d8d067f..6204fd1 100644
--- a/magpie/configuration.nix
+++ b/magpie/configuration.nix
@@ -59,7 +59,7 @@
         aliases = ["git@project-cloud.net"];
       };
     };
-    certificateScheme = 3;
+    certificateScheme = "acme-nginx";
   };
 
   services.journald.extraConfig = ''SystemMaxUse=50M '';