diff --git a/shell.nix b/shell.nix
index c3d98bf..4b64691 100644
--- a/shell.nix
+++ b/shell.nix
@@ -14,6 +14,8 @@
         #dbus-python
       ]))
 
+      pkgs.libcanberra-gtk3
+
       # Not sure if required
       #pkgs.glib
       #pkgs.gtk4
diff --git a/src/dndbuster/app.py b/src/dndbuster/app.py
index 522449a..ffeb9e1 100644
--- a/src/dndbuster/app.py
+++ b/src/dndbuster/app.py
@@ -1,3 +1,5 @@
+import subprocess
+
 import gi
 
 from timer import Timer
@@ -30,6 +32,10 @@ class Application(Adw.Application):
         notification.add_button(label='Restart', detailed_action='app.restart-timer')
         self.send_notification(id=f'{self.get_application_id()}.{Timer.current_time()}', notification=notification)
 
+        # https://0pointer.de/public/sound-naming-spec.html
+        sound_name = 'alarm-clock-elapsed'
+        subprocess.run(['canberra-gtk-play', '-i', sound_name])
+
     def on_notification_button_restart(self, _action: Gio.SimpleAction, _other: None):
         self.window.restart()