diff --git a/include/athena/Global.hpp b/include/athena/Global.hpp
index f15df4b..ddf7e72 100644
--- a/include/athena/Global.hpp
+++ b/include/athena/Global.hpp
@@ -1,6 +1,6 @@
 #pragma once
 
-#include <iostream>
+#include <ostream>
 #include "athena/Types.hpp"
 
 #define FMT_STRING_ALIAS 1
diff --git a/src/athena/Global.cpp b/src/athena/Global.cpp
index ca82e30..ff8c97c 100644
--- a/src/athena/Global.cpp
+++ b/src/athena/Global.cpp
@@ -2,6 +2,7 @@
 #include "athena/Utility.hpp"
 #include <cstdio>
 #include <cstdlib>
+#include <iostream>
 
 #define FMT_STRING_ALIAS 1
 #define FMT_ENFORCE_COMPILE_STRING 1