diff --git a/bin/tsg_log_field.conf b/bin/tsg_log_field.conf
index a01e439..310485f 100644
--- a/bin/tsg_log_field.conf
+++ b/bin/tsg_log_field.conf
@@ -40,3 +40,4 @@ STRING		common_stream_trace_id	33
 STRING		common_schema_type	34
 STRING		http_host		35
 STRING		ssl_sni			36
+LONG		common_establish_latency_ms	37