diff --git a/server/index.ts b/server/index.ts
index 19a267e..b0451e7 100644
--- a/server/index.ts
+++ b/server/index.ts
@@ -2936,8 +2936,8 @@ async function serveStatic(path: string, url?: URL): Promise<Response | null> {
 		const headers: Record<string, string> = { "Content-Type": getContentType(path) };
 		if (url?.searchParams.has("v")) {
 			headers["Cache-Control"] = "public, max-age=31536000, immutable";
-		} else if (path.endsWith(".html")) {
-			// HTML must revalidate so browsers pick up new hashed JS/CSS references
+		} else if (path.endsWith(".html") || path === "sw.js" || path === "manifest.json") {
+			// HTML, service worker, and manifest must revalidate every time
 			headers["Cache-Control"] = "no-cache";
 		} else if (path.startsWith("assets/")) {
 			// Vite content-hashed assets are safe to cache long-term