diff --git a/include/boost/typeof/detail/requires_cxx11.hpp b/include/boost/typeof/detail/requires_cxx11.hpp
new file mode 100644
index 0000000..e58b160
--- /dev/null
+++ b/include/boost/typeof/detail/requires_cxx11.hpp
@@ -0,0 +1,18 @@
+#ifndef BOOST_TYPEOF_DETAIL_REQUIRES_CXX11_HPP_INCLUDED
+#define BOOST_TYPEOF_DETAIL_REQUIRES_CXX11_HPP_INCLUDED
+
+// Copyright 2023 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+#include <boost/config/pragma_message.hpp>
+
+#if defined(BOOST_NO_CXX11_DECLTYPE) || \
+    defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
+
+BOOST_PRAGMA_MESSAGE("C++03 support is deprecated in Boost.Typeof 1.82 and will be removed in Boost.Typeof 1.84.")
+
+#endif
+
+#endif // #ifndef BOOST_TYPEOF_DETAIL_REQUIRES_CXX11_HPP_INCLUDED
diff --git a/include/boost/typeof/typeof.hpp b/include/boost/typeof/typeof.hpp
index 37488ca..da593f1 100644
--- a/include/boost/typeof/typeof.hpp
+++ b/include/boost/typeof/typeof.hpp
@@ -13,6 +13,7 @@
 #   error both typeof emulation and native mode requested
 #endif
 
+#include <boost/typeof/detail/requires_cxx11.hpp>
 #include <boost/config.hpp>
 #include <boost/config/workaround.hpp>