diff --git a/tests/test_format_error.cpp b/tests/test_format_error.cpp
index 7e6c290..df558da 100644
--- a/tests/test_format_error.cpp
+++ b/tests/test_format_error.cpp
@@ -6,6 +6,7 @@
 #include <boost/test/included/unit_test.hpp>
 #endif
 #include <toml.hpp>
+#include <iostream>
 
 // to check it successfully compiles. it does not check the formatted string.
 
diff --git a/toml/parser.hpp b/toml/parser.hpp
index d70282a..2917e6d 100644
--- a/toml/parser.hpp
+++ b/toml/parser.hpp
@@ -8,7 +8,8 @@
 #include "lexer.hpp"
 #include "types.hpp"
 #include "value.hpp"
-#include <iostream>
+#include <fstream>
+#include <sstream>
 #include <cstring>
 
 namespace toml