diff --git a/README.md b/README.md
index 49592d8..f35c01c 100644
--- a/README.md
+++ b/README.md
@@ -119,6 +119,7 @@ haproxy_default_errorfiles:
   - "403 {{ haproxy_errors_directory }}/403.http"
 haproxy_default_http_check:
 haproxy_default_monitor_uri:
+haproxy_default_unique_id_format:
 
 # Userlist
 haproxy_userlist:
diff --git a/defaults/main.yml b/defaults/main.yml
index aca52a8..4825409 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -82,6 +82,7 @@ haproxy_default_errorfiles:
   - "403 {{ haproxy_errors_directory }}/403.http"
 # haproxy_default_http_check:
 # haproxy_default_monitor_uri:
+# haproxy_default_unique_id_format:
 
 # Stats
 haproxy_stats: true
diff --git a/templates/etc/haproxy/haproxy-default.cfg.j2 b/templates/etc/haproxy/haproxy-default.cfg.j2
index d733edc..cb9cfca 100644
--- a/templates/etc/haproxy/haproxy-default.cfg.j2
+++ b/templates/etc/haproxy/haproxy-default.cfg.j2
@@ -42,3 +42,6 @@ defaults
 {% if haproxy_default_mode is defined and haproxy_default_mode | length > 0 %}
     mode        {{ haproxy_default_mode }}
 {% endif %}
+{% if haproxy_default_unique_id_format is defined and haproxy_default_unique_id_format | length %}
+    unique-id-format {{ haproxy_default_unique_id_format }}
+{% endif %}
diff --git a/templates/etc/haproxy/haproxy-frontend.cfg.j2 b/templates/etc/haproxy/haproxy-frontend.cfg.j2
index d3da48d..3c74c78 100644
--- a/templates/etc/haproxy/haproxy-frontend.cfg.j2
+++ b/templates/etc/haproxy/haproxy-frontend.cfg.j2
@@ -121,6 +121,9 @@ frontend {{ name }}
             {% if value.default_backend is defined %}
     default_backend {{ value.default_backend }}
             {% endif %}
+            {% if value.unique_id_format is defined %}
+    unique-id-format {{ value.unique_id_format }}
+            {% endif %}
         {% endfor %}
 
     {% endfor %}
diff --git a/templates/etc/haproxy/haproxy-listen.cfg.j2 b/templates/etc/haproxy/haproxy-listen.cfg.j2
index 50f1396..3110556 100644
--- a/templates/etc/haproxy/haproxy-listen.cfg.j2
+++ b/templates/etc/haproxy/haproxy-listen.cfg.j2
@@ -133,6 +133,9 @@ listen {{ name }}
     log-format      {{ log_format }}
                 {% endfor %}
             {% endif %}
+            {% if value.unique_id_format is defined %}
+    unique-id-format {{ value.unique_id_format }}
+            {% endif %}
         {% endfor %}
 
     {% endfor %}