diff --git a/site/src/layouts/BaseLayout.astro b/site/src/layouts/BaseLayout.astro
index 0e2798d..5c92564 100644
--- a/site/src/layouts/BaseLayout.astro
+++ b/site/src/layouts/BaseLayout.astro
@@ -64,10 +64,12 @@ const canonicalUrl = `${siteUrl}${canonicalPath.startsWith("/") ? canonicalPath
           if ("serviceWorker" in navigator) {
             // SW requires HTTPS (or localhost). In prod we expect HTTPS.
             window.addEventListener("load", () => {
-              navigator.serviceWorker.register("/sw.js", { scope: "/" }).catch((err) => {
+              navigator.serviceWorker
+                .register("/sw.js", { scope: "/", updateViaCache: "none" })
+                .catch((err) => {
                 // Progressive enhancement; keep failures non-fatal.
                 console.warn("Service worker registration failed", err);
-              });
+                });
             });
           }
         </script>