diff --git a/deploy/collabora-proxy/conf.d/collabora.conf b/deploy/collabora-proxy/conf.d/collabora.conf
index 6fc15e2..ed3a52b 100644
--- a/deploy/collabora-proxy/conf.d/collabora.conf
+++ b/deploy/collabora-proxy/conf.d/collabora.conf
@@ -156,5 +156,9 @@ server {
         proxy_read_timeout 3600s;
         proxy_send_timeout 3600s;
         proxy_connect_timeout 60s;
+
+        proxy_buffer_size 128k;
+        proxy_buffers 4 256k;
+        proxy_busy_buffers_size 256k;
     }
 }