diff --git a/intern/cycles/scene/light_tree.h b/intern/cycles/scene/light_tree.h
index d0168ebbf65..156c14e9637 100644
--- a/intern/cycles/scene/light_tree.h
+++ b/intern/cycles/scene/light_tree.h
@@ -12,6 +12,7 @@
 #include "util/types.h"
 #include "util/vector.h"
 
+#include <atomic>
 #include <variant>
 
 CCL_NAMESPACE_BEGIN
diff --git a/intern/cycles/scene/svm.h b/intern/cycles/scene/svm.h
index ac584389fee..88767530703 100644
--- a/intern/cycles/scene/svm.h
+++ b/intern/cycles/scene/svm.h
@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <atomic>
+
 #include "scene/shader.h"
 #include "scene/shader_graph.h"