diff --git a/src/components/heartrate/Ppg.h b/src/components/heartrate/Ppg.h
index ed79b08220..7000c8710b 100644
--- a/src/components/heartrate/Ppg.h
+++ b/src/components/heartrate/Ppg.h
@@ -1,6 +1,8 @@
 #pragma once
 
 #include <array>
+#include <cstddef>
+#include <cstdint>
 #include "components/heartrate/Biquad.h"
 #include "components/heartrate/Ptagc.h"