diff --git a/default.conf b/default.conf
index 3b85930..6746597 100644
--- a/default.conf
+++ b/default.conf
@@ -3,7 +3,12 @@ server {
 
 	index index.html index.htm index.nginx-debian.html;
   server_name _; # managed by Certbot
-  client_max_body_size 100M;
+  client_max_body_size 100M;# kill cache
+  add_header Last-Modified $date_gmt;
+  add_header Cache-Control 'private no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0';
+  if_modified_since off;
+  expires off;
+  etag off;
 
   location /404 {
     try_files $uri $uri/ /index.html;