diff --git a/.changeset/caddy-cache-headers.md b/.changeset/caddy-cache-headers.md
new file mode 100644
index 000000000..498db7463
--- /dev/null
+++ b/.changeset/caddy-cache-headers.md
@@ -0,0 +1,5 @@
+---
+default: patch
+---
+
+Add cache-control headers in Caddyfile for assets, service worker, and index.html
diff --git a/Caddyfile b/Caddyfile
index 63fec50e6..d32ef3bb9 100644
--- a/Caddyfile
+++ b/Caddyfile
@@ -16,6 +16,13 @@
 
 	try_files {path} /index.html
 
+	# Content-hashed assets can be cached indefinitely — the filename changes on every build.
+	header /assets/* Cache-Control "public, max-age=31536000, immutable"
+	# Workbox SW must be revalidated on every load so the browser picks up updates.
+	header /sw.js Cache-Control "no-cache"
+	# index.html must not be cached so the browser always gets the latest app shell.
+	header /index.html Cache-Control "no-cache"
+
         # Required for Sentry browser profiling (JS Self-Profiling API)
         header Document-Policy "js-profiling"
 }