diff --git a/internal/internal_versioning_client.go b/internal/internal_versioning_client.go
index 3112c4663..4a70a5607 100644
--- a/internal/internal_versioning_client.go
+++ b/internal/internal_versioning_client.go
@@ -79,8 +79,8 @@ type (
 		BuildIDs []string
 		// Include the unversioned queue.
 		Unversioned bool
-		// Include all active versions. A version is active if it has had new
-		// tasks or polls recently.
+		// Include all active versions. A version is considered active if, in the last few minutes,
+		// it has had new tasks or polls, or it has been the subject of certain task queue API calls.
 		AllActive bool
 	}