diff --git a/include/boost/serialization/std_optional.hpp b/include/boost/serialization/std_optional.hpp
deleted file mode 100644
index a2f51bc06..000000000
--- a/include/boost/serialization/std_optional.hpp
+++ /dev/null
@@ -1,99 +0,0 @@
-#ifndef BOOST_SERIALIZATION_STD_OPTIONAL_HPP_
-#define BOOST_SERIALIZATION_STD_OPTIONAL_HPP_
-
-#if defined(_MSC_VER)
-# pragma once
-#endif
-
-/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
-// optional.hpp - non-intrusive serialization of optional types
-//
-// copyright (c) 2019 Samuel Debionne, ESRF
-//
-// Use, modification and distribution is subject to the Boost Software
-// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
-// http://www.boost.org/LICENSE_1_0.txt)
-//
-// See http://www.boost.org for updates, documentation, and revision history.
-//
-// Widely inspired form boost::optional serialization
-//
-
-#include <optional>
-
-#include <boost/config.hpp>
-
-#include <boost/serialization/split_free.hpp>
-#include <boost/serialization/level.hpp>
-#include <boost/serialization/nvp.hpp>
-#include <boost/serialization/version.hpp>
-#include <boost/type_traits/is_pointer.hpp>
-#include <boost/serialization/detail/stack_constructor.hpp>
-#include <boost/serialization/detail/is_default_constructible.hpp>
-#include <boost/serialization/force_include.hpp>
-
-// function specializations must be defined in the appropriate
-// namespace - boost::serialization
-namespace boost {
-	namespace serialization {
-
-		template<class Archive, class T>
-		void save(
-			Archive& ar,
-			const std::optional< T >& t,
-			const unsigned int /*version*/
-		) {
-			// It is an inherent limitation to the serialization of optional.hpp
-			// that the underlying type must be either a pointer or must have a
-			// default constructor.  It's possible that this could change sometime
-			// in the future, but for now, one will have to work around it.  This can
-			// be done by serialization the optional<T> as optional<T *>
-#if ! defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
-			BOOST_STATIC_ASSERT(
-				boost::serialization::detail::is_default_constructible<T>::value
-				|| boost::is_pointer<T>::value
-			);
-#endif
-			const bool tflag = t.has_value();
-			ar << boost::serialization::make_nvp("has_value", tflag);
-			if (tflag) {
-				ar << boost::serialization::make_nvp("value", *t);
-			}
-		}
-
-		template<class Archive, class T>
-		void load(
-			Archive& ar,
-			std::optional< T >& t,
-			const unsigned int version
-		) {
-			bool tflag;
-			ar >> boost::serialization::make_nvp("has_value", tflag);
-			if (!tflag) {
-				t.reset();
-				return;
-			}
-
-			if (!t.has_value())
-				t = T();
-			ar >> boost::serialization::make_nvp("value", *t);
-		}
-
-		template<class Archive, class T>
-		void serialize(
-			Archive& ar,
-			std::optional< T >& t,
-			const unsigned int version
-		) {
-			boost::serialization::split_free(ar, t, version);
-		}
-
-		template<class T>
-		struct version<std::optional<T> > {
-			BOOST_STATIC_CONSTANT(int, value = 1);
-		};
-
-	} // serialization
-} // boost
-
-#endif // BOOST_SERIALIZATION_STD_OPTIONAL_HPP_