diff --git a/lib/inc/drogon/RequestStream.h b/lib/inc/drogon/RequestStream.h
index 852f0756..b977ffb4 100644
--- a/lib/inc/drogon/RequestStream.h
+++ b/lib/inc/drogon/RequestStream.h
@@ -16,6 +16,7 @@
 #include <string>
 #include <functional>
 #include <memory>
+#include <exception>
 
 namespace drogon
 {