diff --git a/web/src/hooks/useRealtime.ts b/web/src/hooks/useRealtime.ts
index 16f8a1e..9f2a09b 100644
--- a/web/src/hooks/useRealtime.ts
+++ b/web/src/hooks/useRealtime.ts
@@ -256,7 +256,7 @@ export function useRealtime() {
         }
       };
 
-      ws.onclose = () => {
+      ws.onclose = (closeEvent) => {
         if (heartbeatIntervalRef.current !== null) {
           window.clearInterval(heartbeatIntervalRef.current);
           heartbeatIntervalRef.current = null;
@@ -269,6 +269,11 @@ export function useRealtime() {
           window.clearInterval(reconcileIntervalRef.current);
           reconcileIntervalRef.current = null;
         }
+        if (closeEvent.code === 4401 || closeEvent.code === 1008) {
+          manualCloseRef.current = true;
+          useAuthStore.getState().logout();
+          return;
+        }
         if (manualCloseRef.current) {
           return;
         }