diff --git a/src/exp.h b/src/exp.h
index 7811bd2..d3e2fb6 100644
--- a/src/exp.h
+++ b/src/exp.h
@@ -3,6 +3,7 @@
 #include "regex.h"
 #include <string>
 #include <ios>
+#include <cstdio>
 #include "stream.h"
 
 namespace YAML
diff --git a/src/parser.cpp b/src/parser.cpp
index d0ba2b2..3ec4773 100644
--- a/src/parser.cpp
+++ b/src/parser.cpp
@@ -4,6 +4,7 @@
 #include "token.h"
 #include "exceptions.h"
 #include <sstream>
+#include <cstdio>
 
 namespace YAML
 {