diff --git a/tools/gn/bootstrap/bootstrap.py b/tools/gn/bootstrap/bootstrap.py
index 6059741..78e508d 100755
--- a/tools/gn/bootstrap/bootstrap.py
+++ b/tools/gn/bootstrap/bootstrap.py
@@ -532,6 +532,7 @@
         'base/synchronization/read_write_lock_posix.cc',
         'base/synchronization/waitable_event_posix.cc',
         'base/sys_info_posix.cc',
+        'base/task_scheduler/task_tracker_posix.cc',
         'base/threading/platform_thread_internal_posix.cc',
         'base/threading/platform_thread_posix.cc',
         'base/threading/thread_local_storage_posix.cc',