diff --git a/api/make_ref_counted.h b/api/make_ref_counted.h
index cc8871784a..e958da9774 100644
--- a/api/make_ref_counted.h
+++ b/api/make_ref_counted.h
@@ -10,6 +10,7 @@
 #ifndef API_MAKE_REF_COUNTED_H_
 #define API_MAKE_REF_COUNTED_H_
 
+#include <type_traits>
 #include <utility>
 
 #include "rtc_base/ref_counted_object.h"
diff --git a/modules/audio_processing/transient/wpd_node.h b/modules/audio_processing/transient/wpd_node.h
index 41614fab0f..645bc5f2e8 100644
--- a/modules/audio_processing/transient/wpd_node.h
+++ b/modules/audio_processing/transient/wpd_node.h
@@ -11,6 +11,7 @@
 #ifndef MODULES_AUDIO_PROCESSING_TRANSIENT_WPD_NODE_H_
 #define MODULES_AUDIO_PROCESSING_TRANSIENT_WPD_NODE_H_
 
+#include <cstddef>
 #include <memory>
 
 namespace webrtc {