diff --git a/src/indentation.h b/src/indentation.h
index 1a2ccae..2a0137e 100644
--- a/src/indentation.h
+++ b/src/indentation.h
@@ -7,7 +7,6 @@
 #pragma once
 #endif
 
-#include <iostream>
 #include <cstddef>
 
 #include "yaml-cpp/ostream_wrapper.h"
diff --git a/src/ostream_wrapper.cpp b/src/ostream_wrapper.cpp
index 047a9f7..2936007 100644
--- a/src/ostream_wrapper.cpp
+++ b/src/ostream_wrapper.cpp
@@ -2,7 +2,7 @@
 
 #include <algorithm>
 #include <cstring>
-#include <iostream>
+#include <ostream>
 
 namespace YAML {
 ostream_wrapper::ostream_wrapper()
diff --git a/src/stream.cpp b/src/stream.cpp
index 72f0ec0..794ae87 100644
--- a/src/stream.cpp
+++ b/src/stream.cpp
@@ -1,4 +1,4 @@
-#include <iostream>
+#include <istream>
 
 #include "stream.h"
 
diff --git a/src/stream.h b/src/stream.h
index 214104a..c5e3798 100644
--- a/src/stream.h
+++ b/src/stream.h
@@ -11,7 +11,7 @@
 #include <cstddef>
 #include <deque>
 #include <ios>
-#include <iostream>
+#include <istream>
 #include <set>
 #include <string>
 
diff --git a/src/token.h b/src/token.h
index ebd8477..d93ad2b 100644
--- a/src/token.h
+++ b/src/token.h
@@ -8,7 +8,7 @@
 #endif
 
 #include "yaml-cpp/mark.h"
-#include <iostream>
+#include <ostream>
 #include <string>
 #include <vector>