diff --git a/systems/x86_64-linux/gospel/default.nix b/systems/x86_64-linux/gospel/default.nix
index 6916095..24e8770 100644
--- a/systems/x86_64-linux/gospel/default.nix
+++ b/systems/x86_64-linux/gospel/default.nix
@@ -75,6 +75,7 @@
     esptool
     minicom
     file
+    signal-desktop
   ];
 
   # This value determines the NixOS release from which the default