diff --git a/src/pinnable_mapped_file.cpp b/src/pinnable_mapped_file.cpp
index 6c4cd34..4132a23 100644
--- a/src/pinnable_mapped_file.cpp
+++ b/src/pinnable_mapped_file.cpp
@@ -4,6 +4,7 @@
 #include <boost/interprocess/anonymous_shared_memory.hpp>
 #include <boost/asio/signal_set.hpp>
 #include <iostream>
+#include <fstream>
 
 #ifdef __linux__
 #include <linux/mman.h>