diff --git a/nixos/modules/services/desktop-managers/cosmic.nix b/nixos/modules/services/desktop-managers/cosmic.nix
index 4a3e6982b933..26b185cc7742 100644
--- a/nixos/modules/services/desktop-managers/cosmic.nix
+++ b/nixos/modules/services/desktop-managers/cosmic.nix
@@ -86,6 +86,7 @@ in
           cosmic-icons
           cosmic-player
           cosmic-randr
+          cosmic-reader
           cosmic-screenshot
           cosmic-term
           cosmic-wallpapers