diff --git a/http_examples.cpp b/http_examples.cpp
index 8ad4251..fc867c8 100644
--- a/http_examples.cpp
+++ b/http_examples.cpp
@@ -1,5 +1,6 @@
 #include "client_http.hpp"
 #include "server_http.hpp"
+#include <future>
 
 // Added for the json-example
 #define BOOST_SPIRIT_THREADSAFE
diff --git a/https_examples.cpp b/https_examples.cpp
index 1c24f05..2200e69 100644
--- a/https_examples.cpp
+++ b/https_examples.cpp
@@ -1,5 +1,6 @@
 #include "client_https.hpp"
 #include "server_https.hpp"
+#include <future>
 
 // Added for the json-example
 #define BOOST_SPIRIT_THREADSAFE