diff --git a/modules/services/gitea-instance.nix b/modules/services/gitea-instance.nix
index 82a6371..3c1cade 100644
--- a/modules/services/gitea-instance.nix
+++ b/modules/services/gitea-instance.nix
@@ -35,6 +35,7 @@ in {
         server.PROTOCOL = "http+unix";
         server.ROOT_URL = "https://${cfg.instanceFQDN}/";
         server.DOMAIN = cfg.instanceFQDN;
+        server.DISABLE_REGISTRATION = true;
       };
     };