diff --git a/src/SendMessageRequest.cpp b/src/SendMessageRequest.cpp
index 868096c..90fa430 100644
--- a/src/SendMessageRequest.cpp
+++ b/src/SendMessageRequest.cpp
@@ -6,6 +6,8 @@
 #include <rapidjson/document.h>
 #include <rapidjson/writer.h>
 
+#include <iostream>
+
 using namespace telebotxx;
 
 class SendMessageRequest::Impl
diff --git a/src/SendPhotoRequest.cpp b/src/SendPhotoRequest.cpp
index 9c0afab..885a8fe 100644
--- a/src/SendPhotoRequest.cpp
+++ b/src/SendPhotoRequest.cpp
@@ -7,6 +7,8 @@
 #include <rapidjson/document.h>
 #include <rapidjson/writer.h>
 
+#include <iostream>
+
 using namespace telebotxx;
 
 class SendPhotoRequest::Impl