diff --git a/machines/nixos/storage01/forgejo.nix b/machines/nixos/storage01/forgejo.nix
index 1f124eed..17dc30a2 100644
--- a/machines/nixos/storage01/forgejo.nix
+++ b/machines/nixos/storage01/forgejo.nix
@@ -70,6 +70,8 @@ in
 
           DISABLE_REGISTRATION = false;
           REGISTER_EMAIL_CONFIRM = true;
+
+          ENABLE_CAPTCHA = true;
         };
 
         ui.THEMES = "forgejo-auto,forgejo-light,forgejo-dark";