diff --git a/fs.go b/fs.go
index 543a60f..d7f7ed6 100644
--- a/fs.go
+++ b/fs.go
@@ -138,9 +138,9 @@ func ContentTypeHeaderHandler(w http.ResponseWriter, r *http.Request, info Routi
 	}
 }
 
-// CacheControlHeaderHandler send cache control header of 7 days
+// CacheControlHeaderHandler send cache control header of 7 days for the browser and 30 days for the CDN
 func CacheControlHeaderHandler(w http.ResponseWriter, r *http.Request, info RoutingInfo, file fs.File) {
-	w.Header().Set("Cache-Control", fmt.Sprintf("public, max-age=%d", 60*60*24*7))
+	w.Header().Set("Cache-Control", fmt.Sprintf("public, s-maxage=%d, max-age=%d", 60*60*24*30, 60*60*24*7))
 }
 
 // ContentTypeOptionHeaderHandler for nosniff content type option