diff --git a/nginx.conf b/nginx.conf
index e69f35b..2dd5918 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -62,6 +62,9 @@ location /INSTANCE {
   location ~ .*\.gif$ {
     add_header Cache-Control "public, max-age=1209600";
   }
+  location ~ index.html$ {
+    add_header Cache-Control "public, max-age=300";
+  }
   location ~ config.js$ {
     add_header Cache-Control "public, max-age=10";
   }