diff --git a/autoware.repos b/autoware.repos
index 66feaa178b..2ad1eb7bbe 100644
--- a/autoware.repos
+++ b/autoware.repos
@@ -38,7 +38,7 @@ repositories:
     type: git
     url: https://github.com/autowarefoundation/autoware.universe.git
     version: main
-  universe/external/tier4_ad_api_adaptor: # TODO(TIER IV): Migrate to AD API
+  universe/external/tier4_ad_api_adaptor: # TODO(TIER IV): Migrate to AD API and remove this repository entry.
     type: git
     url: https://github.com/tier4/tier4_ad_api_adaptor.git
     version: tier4/universe