diff --git a/mastus/vmtest.nix b/mastus/vmtest.nix
index 95dd9f5..78d838e 100644
--- a/mastus/vmtest.nix
+++ b/mastus/vmtest.nix
@@ -26,6 +26,7 @@ let
       carddav-util
       fcgi
       wstunnel
+      sqlite-interactive
     ];
 
     systemd.services."acme-gebner.org".serviceConfig.ExecStart = pkgs.lib.mkForce "true";