diff --git a/templates/haproxy_cfg.jinja2 b/templates/haproxy_cfg.jinja2
index ed5373d2b9c25c40349f05764155c108f6bc1702..bc8ef970869ca070acf86de4d6bd8b8c2a673cfd 100644
--- a/templates/haproxy_cfg.jinja2
+++ b/templates/haproxy_cfg.jinja2
@@ -286,6 +286,9 @@ backend backend_{{host}}
 {% if host == inventory_hostname or host == 'localhost' %}
   http-response deny
 {% else %}
+{% for line in hostvars[host]['proxy_backend_extra_lines']|default([]) %}
+  {{ line }}
+{% endfor %}
   server server_{{host}} {{hostvars[host]['static_ipv4']}}:80 check maxconn {{hostvars[host]['proxy_maxconn']|default(proxy_maxconn)}}
 {% endif %}
 
@@ -293,6 +296,9 @@ backend backend_{{host}}_bigpipe
 {% if host == inventory_hostname or host == 'localhost' %}
   http-response deny
 {% else %}
+{% for line in hostvars[host]['proxy_backend_extra_lines']|default([]) %}
+  {{ line }}
+{% endfor %}
   no option http-buffer-request
   server server_{{host}} {{hostvars[host]['static_ipv4']}}:80 check maxconn {{hostvars[host]['proxy_maxconn']|default(proxy_maxconn)}}
 {% endif %}
@@ -301,6 +307,9 @@ backend backend_{{host}}_https
 {% if host == inventory_hostname or host == 'localhost' %}
   http-response deny
 {% else %}
+{% for line in hostvars[host]['proxy_backend_extra_lines']|default([]) %}
+  {{ line }}
+{% endfor %}
   http-response set-header Strict-Transport-Security "max-age=16000000; includeSubDomains; preload;"
   server server_{{host}} {{hostvars[host]['static_ipv4']}}:80 check maxconn {{hostvars[host]['proxy_maxconn']|default(proxy_maxconn)}}
 {% endif %}
@@ -309,6 +318,9 @@ backend backend_{{host}}_https_bigpipe
 {% if host == inventory_hostname or host == 'localhost' %}
   http-response deny
 {% else %}
+{% for line in hostvars[host]['proxy_backend_extra_lines']|default([]) %}
+  {{ line }}
+{% endfor %}
   no option http-buffer-request
   http-response set-header Strict-Transport-Security "max-age=16000000; includeSubDomains; preload;"
   server server_{{host}} {{hostvars[host]['static_ipv4']}}:80 check maxconn {{hostvars[host]['proxy_maxconn']|default(proxy_maxconn)}}