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
diff --git a/nixos/tests/cosmic.nix b/nixos/tests/cosmic.nix
index d6b67c692d9d..3d2b838ab66e 100644
--- a/nixos/tests/cosmic.nix
+++ b/nixos/tests/cosmic.nix
@@ -64,6 +64,18 @@
       DISPLAY = lib.strings.optionalString enableXWayland (
         if enableAutologin then "DISPLAY=:0" else "DISPLAY=:1"
       );
+      emptyPDF = config.node.pkgs.stdenvNoCC.mkDerivation {
+        name = "empty-pdf";
+        dontUnpack = true;
+        nativeBuildInputs = [ config.node.pkgs.imagemagick ];
+        buildPhase = ''
+          magick xc:none -page Letter empty.pdf
+        '';
+        installPhase = ''
+          mkdir $out
+          mv empty.pdf $out/empty.pdf
+        '';
+      };
     in
     ''
       #testName: ${testName}
@@ -107,6 +119,7 @@
           gui_apps_to_launch['cosmic-edit'] = 'com.system76.CosmicEdit'
           gui_apps_to_launch['cosmic-files'] = 'com.system76.CosmicFiles'
           gui_apps_to_launch['cosmic-player'] = 'com.system76.CosmicPlayer'
+          gui_apps_to_launch['cosmic-reader'] = 'com.system76.CosmicReader'
           gui_apps_to_launch['cosmic-settings'] = 'com.system76.CosmicSettings'
           gui_apps_to_launch['cosmic-store'] = 'com.system76.CosmicStore'
           gui_apps_to_launch['cosmic-term'] = 'com.system76.CosmicTerm'
@@ -114,10 +127,16 @@
           for gui_app, app_id in gui_apps_to_launch.items():
               # Don't fail the test if binary is absent
               if machine.execute(f"su - ${user.name} -c 'command -v {gui_app}'", timeout=5)[0] == 0:
-                  machine.succeed(f"su - ${user.name} -c 'WAYLAND_DISPLAY=wayland-1 XDG_RUNTIME_DIR=/run/user/${toString user.uid} ${DISPLAY} {gui_app} >&2 &'", timeout=5)
+                  match gui_app:
+                      case 'cosmic-reader':
+                          opt_arg = '${emptyPDF}/empty.pdf'
+                      case _:
+                          opt_arg = ""
+
+                  machine.succeed(f"su - ${user.name} -c 'WAYLAND_DISPLAY=wayland-1 XDG_RUNTIME_DIR=/run/user/${toString user.uid} ${DISPLAY} {gui_app} {opt_arg} >&2 &'", timeout=5)
                   # Nix builds the following non-commented expression to the following:
                   #                              `su - alice -c 'WAYLAND_DISPLAY=wayland-1 XDG_RUNTIME_DIR=/run/user/1000 lswt --json | jq ".toplevels" | grep "^    \\"app-id\\": \\"{app_id}\\"$"' `
-                  machine.wait_until_succeeds(f''''su - ${user.name} -c 'WAYLAND_DISPLAY=wayland-1 XDG_RUNTIME_DIR=/run/user/${toString user.uid} lswt --json | jq ".toplevels" | grep "^    \\"app-id\\": \\"{app_id}\\"$"' '''', timeout=30)
+                  machine.wait_until_succeeds(f''''su - ${user.name} -c 'WAYLAND_DISPLAY=wayland-1 XDG_RUNTIME_DIR=/run/user/${toString user.uid} lswt --json | jq ".toplevels" | grep "^    \\"app-id\\": \\"{app_id}\\"$"' '''', timeout=60)
                   machine.succeed(f"pkill {gui_app}", timeout=5)
 
       machine.succeed("echo 'test completed succeessfully' > /${testName}", timeout=5)