diff --git a/lib/src/BufferedWriter.cpp b/lib/src/BufferedWriter.cpp
index 5d30abf..7aea2fc 100644
--- a/lib/src/BufferedWriter.cpp
+++ b/lib/src/BufferedWriter.cpp
@@ -1,3 +1,5 @@
+#include <iostream>
+
 #include "H5Format.hpp"
 #include "BufferedWriter.hpp"