diff --git a/build/Caddyfile b/build/Caddyfile
index 3758006d..a20b9078 100644
--- a/build/Caddyfile
+++ b/build/Caddyfile
@@ -10,3 +10,7 @@ file_server {
     precompressed br
 }
 root * /usr/share/caddy
+
+route /assets/* {
+    header Cache-Control "public, max-age=31536000, immutable"
+}