diff --git a/desktop/main.cjs b/desktop/main.cjs
--- a/desktop/main.cjs
+++ b/desktop/main.cjs
@@ -116,6 +116,10 @@
     }
   });
 
+  ipcMain.on('set-badge', (event, value) => {
+    app.dock.setBadge(value?.toString() ?? '');
+  });
+
   win.webContents.setWindowOpenHandler(({ url: openURL }) => {
     shell.openExternal(openURL);
     // Returning 'deny' prevents a new electron window from being created
diff --git a/desktop/preload.cjs b/desktop/preload.cjs
--- a/desktop/preload.cjs
+++ b/desktop/preload.cjs
@@ -8,6 +8,7 @@
   },
   clearHistory: () => ipcRenderer.send('clear-history'),
   doubleClickTopBar: () => ipcRenderer.send('double-click-top-bar'),
+  setBadge: value => ipcRenderer.send('set-badge', value),
 };
 
 contextBridge.exposeInMainWorld('electronContextBridge', bridge);
diff --git a/web/app.react.js b/web/app.react.js
--- a/web/app.react.js
+++ b/web/app.react.js
@@ -269,6 +269,7 @@
     const boundUnreadCount = useSelector(unreadCount);
     React.useEffect(() => {
       document.title = getTitle(boundUnreadCount);
+      electron?.setBadge(boundUnreadCount === 0 ? null : boundUnreadCount);
     }, [boundUnreadCount]);
 
     const dispatch = useDispatch();
diff --git a/web/electron.js b/web/electron.js
--- a/web/electron.js
+++ b/web/electron.js
@@ -12,6 +12,7 @@
   +onNavigate: OnNavigateListener => () => void,
   +clearHistory: () => void,
   +doubleClickTopBar: () => void,
+  +setBadge: (value: string | number | null) => void,
 } = typeof electronContextBridge === 'undefined' ? null : electronContextBridge;
 
 export default electron;