1 files changed, 3 insertions, 0 deletions
diff --git a/aclk/aclk_api.c b/aclk/aclk_api.c
index 766f7805..a2e738ab 100644
--- a/aclk/aclk_api.c
+++ b/aclk/aclk_api.c
@@ -16,6 +16,7 @@ int aclk_disable_runtime = 0;
 int aclk_disable_single_updates = 0;
 
 int aclk_stats_enabled;
+int use_mqtt_5 = 0;
 
 #define ACLK_IMPL_KEY_NAME "aclk implementation"
 
@@ -68,6 +69,8 @@ struct label *add_aclk_host_labels(struct label *label) {
             break;
     }
 
+    int mqtt5 = config_get_boolean(CONFIG_SECTION_CLOUD, "mqtt5", CONFIG_BOOLEAN_NO);
+    label = add_label_to_list(label, "_mqtt_version", mqtt5 ? "5" : "3", LABEL_SOURCE_AUTO);
     label = add_label_to_list(label, "_aclk_impl", "Next Generation", LABEL_SOURCE_AUTO);
     label = add_label_to_list(label, "_aclk_proxy", proxy_str, LABEL_SOURCE_AUTO);
 #ifdef ENABLE_NEW_CLOUD_PROTOCOL