diff --git a/cpp/src/arrow/flight/sql/server_session_middleware_factory.h b/cpp/src/arrow/flight/sql/server_session_middleware_factory.h index 4e3d72676f51e..d6c7c68630e11 100644 --- a/cpp/src/arrow/flight/sql/server_session_middleware_factory.h +++ b/cpp/src/arrow/flight/sql/server_session_middleware_factory.h @@ -26,6 +26,8 @@ #include #include +#include + namespace arrow { namespace flight { namespace sql {