diff --git a/src/customloaderinterface.hpp b/src/customloaderinterface.hpp
index 1b193fb840..56af6c6a33 100644
--- a/src/customloaderinterface.hpp
+++ b/src/customloaderinterface.hpp
@@ -15,6 +15,7 @@
 //*****************************************************************************
 #pragma once
 
+#include <cstdint>
 #include <string>
 #include <vector>
 
diff --git a/src/dags/session_id.hpp b/src/dags/session_id.hpp
index e7d6282b22..c8c608fedd 100644
--- a/src/dags/session_id.hpp
+++ b/src/dags/session_id.hpp
@@ -15,6 +15,7 @@
 //*****************************************************************************
 #pragma once
 
+#include <cstdint>
 #include <string>
 
 namespace ovms {