diff --git a/sw.js b/sw.js
index c62e616..cc7ef6f 100644
--- a/sw.js
+++ b/sw.js
@@ -14,6 +14,18 @@ self.addEventListener("install", event => {
 })
 
 async function cacheFirst(request) {
+  if (request.url.includes('/-/frame')) {
+    const url = new URL(request.url)
+    if (url.pathname === '/-/frame') {
+      const {html, csp} = url.searchParams
+      return new Response(html, {
+        headers: {
+          'Content-Type': 'text/html',
+          'Content-Security-Policy': csp,
+        }
+      }
+    }
+  }
   const resp = await caches.match(request)
   if (resp) {
     return resp