diff --git a/orc-rt/include/orc-rt/Session.h b/orc-rt/include/orc-rt/Session.h
index fbace053bd72f..78bd92bb0d0c8 100644
--- a/orc-rt/include/orc-rt/Session.h
+++ b/orc-rt/include/orc-rt/Session.h
@@ -19,6 +19,8 @@
 
 #include "orc-rt-c/CoreTypes.h"
 
+#include <memory>
+#include <mutex>
 #include <vector>
 
 namespace orc_rt {