diff --git a/api/task_queue/BUILD.gn b/api/task_queue/BUILD.gn
index 94b8deb..9c571c5 100644
--- a/api/task_queue/BUILD.gn
+++ b/api/task_queue/BUILD.gn
@@ -107,6 +107,7 @@
 }
 
 rtc_library("pending_task_safety_flag") {
+  visibility = [ "*" ]
   sources = [
     "pending_task_safety_flag.cc",
     "pending_task_safety_flag.h",