diff --git a/nginx/themes.conf.template b/nginx/themes.conf.template
index 62f0bc55..beb743e2 100644
--- a/nginx/themes.conf.template
+++ b/nginx/themes.conf.template
@@ -5,11 +5,25 @@ server {
     error_log /var/log/nginx/error.log;
     root /var/www;
 
+    client_body_buffer_size 1K;
+    client_header_buffer_size 1k;
+    client_max_body_size 1k;
+
+    # Block download agents
+    if ($http_user_agent ~ LWP::Simple|BBBike|wget) {
+        return 403;
+    }
+
+    # Block some robots
+    if ($http_user_agent ~ msnbot|scrapbot) {
+        return 403;
+    }
+
     location / {
-        expires 1M;
+        expires 1w;
         sendfile on;
         tcp_nopush on;
         tcp_nodelay on;
         add_header Cache-Control "public";
     }
-}
+}
\ No newline at end of file