diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index 9691baf..4fc1fae 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -7,8 +7,16 @@
   const signedIn = computed(() => Boolean(auth.token))
 
   async function signOut () {
-    clearSession()
-    await router.push('/')
+    const token = auth.token
+    try {
+      await fetch('/api/signout', {
+        method: 'POST',
+        headers: { Authorization: `Bearer ${token}` },
+      })
+    } finally {
+      clearSession()
+      await router.push('/')
+    }
   }
 </script>