diff --git a/modules/nixos-modules/server/forgejo.nix b/modules/nixos-modules/server/forgejo.nix
index fa8ebb6..cba5313 100644
--- a/modules/nixos-modules/server/forgejo.nix
+++ b/modules/nixos-modules/server/forgejo.nix
@@ -43,6 +43,9 @@ in {
             DOMAIN = "${config.host.forgejo.subdomain}.${config.host.reverse_proxy.hostname}";
             HTTP_PORT = forgejoPort;
           };
+          service = {
+            DISABLE_REGISTRATION = true;
+          };
         };
       };
     }