diff --git a/README.md b/README.md
index 693076d..da5c945 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ Role to install Nginx.
 | `nginx_package_name` | `nginx-full` | Name of the Debian package to install |
 | `nginx_bad_client_ip` | | List of IP address to deny access |
 | `nginx_type` | | `gateway` for a Reverse Proxy, `standalone` for a frontend webserver, `backend` for a backend webserver (behind a Reverse Proxy) |
+| `nginx_proxy_headers_hash_bucket_size` | `64` | |
 | `dhparam_path` | `/etc/ssl/private/dhparam.pem` | Path to dhparam file |
 | `dhparam_size` | `4096` | Size (in bits) of the generated DH-params |
 
diff --git a/templates/reverse_proxy.conf.j2 b/templates/reverse_proxy.conf.j2
index 61dde0b..013992d 100644
--- a/templates/reverse_proxy.conf.j2
+++ b/templates/reverse_proxy.conf.j2
@@ -20,3 +20,5 @@ proxy_buffering         off;
 proxy_connect_timeout   600;
 proxy_send_timeout      600;
 proxy_read_timeout      600;
+
+proxy_headers_hash_bucket_size {{ nginx_proxy_header_hash_bucket_size | default(64) }};