diff --git a/self-hosted/deployment/docker.mdx b/self-hosted/deployment/docker.mdx
index 920d6fe0..4eecf59a 100644
--- a/self-hosted/deployment/docker.mdx
+++ b/self-hosted/deployment/docker.mdx
@@ -121,6 +121,11 @@ server {
     proxy_http_version 1.1;
     proxy_buffering off;
 
+    # Allow large OAuth response headers, such as session cookies.
+    # Keep proxy_buffers large enough for Nginx's buffer-size checks.
+    proxy_buffer_size 32k;
+    proxy_buffers 8 16k;
+
     client_max_body_size 0;
     proxy_read_timeout 36000s;
     proxy_redirect off;