diff --git a/roles/lemonldap_ng/defaults/main.yml b/roles/lemonldap_ng/defaults/main.yml
index 63bea85..59cb037 100644
--- a/roles/lemonldap_ng/defaults/main.yml
+++ b/roles/lemonldap_ng/defaults/main.yml
@@ -82,3 +82,12 @@ llng_workers: 6
 
 # Sessions are cached locally for performance reasons. You can set the duration (in seconds) for which the cache will be considered valid
 llng_session_cache: 300
+
+# You can, inject a custom configuration in lemonldap-ng.ini (all section)
+# llng_custom_config: |
+#   messageBrokerOptions = { \
+#     'server' => 'lemonldap-ng-valkey.example.org:6379', \
+#     'ssl' => 1, \
+#     'password' => '{{ vault_llng_redis_pwd }}' \
+#   }
+
diff --git a/roles/lemonldap_ng/templates/lemonldap-ng.ini.j2 b/roles/lemonldap_ng/templates/lemonldap-ng.ini.j2
index 4c0a6f1..9ecfce9 100644
--- a/roles/lemonldap_ng/templates/lemonldap-ng.ini.j2
+++ b/roles/lemonldap_ng/templates/lemonldap-ng.ini.j2
@@ -46,6 +46,11 @@ localSessionStorageOptions = {                        \
   'cache_depth'        => 3                           \
 }
 
+{% if llng_custom_config is defined %}
+# Custom configuration
+{{ llng_custom_config }}
+{% endif %}
+
 [configuration]
 {% if llng_conf_backend == 'file' %}
 type                = File