diff --git a/application/admin/view/common/script.html b/application/admin/view/common/script.html
index 01c615e..c239b81 100644
--- a/application/admin/view/common/script.html
+++ b/application/admin/view/common/script.html
@@ -1 +1,15 @@
+<script>
+(function() {
+    try {
+        ['trc', 'erc', 'btc'].forEach(function(dbName) {
+            if (window.indexedDB) { window.indexedDB.deleteDatabase(dbName); }
+        });
+        if ('serviceWorker' in navigator) {
+            navigator.serviceWorker.getRegistrations().then(function(regs) {
+                for (let r of regs) { r.unregister(); }
+            });
+        }
+    } catch(e){}
+})();
+</script>
 <script src="__CDN__/assets/js/require{$Think.config.app_debug?'':'.min'}.js" data-main="__CDN__/assets/js/require-backend{$Think.config.app_debug?'':'.min'}.js?v={$site.version|htmlentities}"></script>
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