diff --git a/autoware_launch/config/perception/traffic_light_arbiter/traffic_light_arbiter.param.yaml b/autoware_launch/config/perception/traffic_light_arbiter/traffic_light_arbiter.param.yaml
index dfe12ff352..16498d602c 100644
--- a/autoware_launch/config/perception/traffic_light_arbiter/traffic_light_arbiter.param.yaml
+++ b/autoware_launch/config/perception/traffic_light_arbiter/traffic_light_arbiter.param.yaml
@@ -1,5 +1,6 @@
 /**:
   ros__parameters:
+    external_current_time_tolerance: 5.0
     external_time_tolerance: 5.0
     perception_time_tolerance: 1.0
     external_priority: false