diff --git a/modules/audio_processing/aec3/render_delay_buffer.cc b/modules/audio_processing/aec3/render_delay_buffer.cc
index 05791216a5..ec5d35507e 100644
--- a/modules/audio_processing/aec3/render_delay_buffer.cc
+++ b/modules/audio_processing/aec3/render_delay_buffer.cc
@@ -13,6 +13,7 @@
 #include <string.h>
 
 #include <algorithm>
+#include <atomic>
 #include <cmath>
 #include <memory>
 #include <numeric>
diff --git a/modules/audio_processing/aec3/render_delay_controller.cc b/modules/audio_processing/aec3/render_delay_controller.cc
index 826c38a1e9..7fd2868c38 100644
--- a/modules/audio_processing/aec3/render_delay_controller.cc
+++ b/modules/audio_processing/aec3/render_delay_controller.cc
@@ -12,6 +12,7 @@
 #include <stddef.h>
 
 #include <algorithm>
+#include <atomic>
 #include <memory>
 
 #include "absl/types/optional.h"