diff --git a/sw.js b/sw.js
index e8b945b..96a1186 100644
--- a/sw.js
+++ b/sw.js
@@ -1,4 +1,4 @@
-const CACHE  = 'posimai-brief-v3';
+const CACHE  = 'posimai-brief-v4';
 const ASSETS = ['/', '/index.html', '/manifest.json'];
 const ORIGIN = self.location.origin;