diff --git a/backend/src/routes/auth.js b/backend/src/routes/auth.js
index b78f252..40a3001 100644
--- a/backend/src/routes/auth.js
+++ b/backend/src/routes/auth.js
@@ -62,6 +62,7 @@ module.exports = function(io) {
   router.post('/logout', authMiddleware, async (req, res) => {
     try {
       await clearActiveSession(req.schema, req.user.id, req.device);
+      await exec(req.schema, 'DELETE FROM push_subscriptions WHERE user_id=$1 AND device=$2', [req.user.id, req.device]);
       res.json({ success: true });
     } catch (e) { res.status(500).json({ error: e.message }); }
   });