diff --git a/checks/Jamfile.v2 b/checks/Jamfile.v2
index a16bef5cc..b59603642 100644
--- a/checks/Jamfile.v2
+++ b/checks/Jamfile.v2
@@ -1,6 +1,6 @@
 #
 # *** DO NOT EDIT THIS FILE BY HAND ***
-# This file was automatically generated on Fri Oct 13 19:09:38 2023
+# This file was automatically generated on Tue Oct 17 19:14:20 2023
 #  by libs/config/tools/generate.cpp
 # Copyright John Maddock.
 # Use, modification and distribution are subject to the 
@@ -263,6 +263,8 @@ obj cpp_size_t_suffix_23 : std/cpp_size_t_suffix_23.cpp ;
 alias cpp_size_t_suffix : cpp_size_t_suffix_23 ;
 obj cpp_static_call_operator_23 : std/cpp_static_call_operator_23.cpp ;
 alias cpp_static_call_operator : cpp_static_call_operator_23 ;
+obj cpp_lib_coroutine_20 : std/cpp_lib_coroutine_20.cpp ;
+alias cpp_lib_coroutine : cpp_lib_coroutine_20 ;
 obj cpp_impl_destroying_delete_20 : std/cpp_impl_destroying_delete_20.cpp ;
 alias cpp_impl_destroying_delete : cpp_impl_destroying_delete_20 ;
 obj cpp_lib_destroying_delete_20 : std/cpp_lib_destroying_delete_20.cpp ;
@@ -281,6 +283,8 @@ obj cpp_lib_char8_t_20 : std/cpp_lib_char8_t_20.cpp ;
 alias cpp_lib_char8_t : cpp_lib_char8_t_20 ;
 obj cpp_lib_concepts_20 : std/cpp_lib_concepts_20.cpp ;
 alias cpp_lib_concepts : cpp_lib_concepts_20 ;
+obj cpp_concepts_20 : std/cpp_concepts_20.cpp ;
+alias cpp_concepts : cpp_concepts_20 ;
 obj cpp_lib_constexpr_swap_algorithms_20 : std/cpp_lib_constexpr_swap_algorithms_20.cpp ;
 alias cpp_lib_constexpr_swap_algorithms : cpp_lib_constexpr_swap_algorithms_20 ;
 obj cpp_lib_constexpr_misc_20 : std/cpp_lib_constexpr_misc_20.cpp ;
diff --git a/checks/std/cpp_concepts_20.cpp b/checks/std/cpp_concepts_20.cpp
new file mode 100644
index 000000000..f47c006ba
--- /dev/null
+++ b/checks/std/cpp_concepts_20.cpp
@@ -0,0 +1,30 @@
+//  This file was automatically generated on Tue Oct 17 18:26:45 2023
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  Use, modification and distribution are 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/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+#ifdef __has_include
+#if __has_include(<version>)
+#include <version>
+#endif
+#endif
+
+#ifndef __cpp_concepts
+#error "Macro << __cpp_concepts is not set"
+#endif
+
+#if __cpp_concepts < 201907
+#error "Macro __cpp_concepts had too low a value"
+#endif
+
+int main( int, char *[] )
+{
+   return 0;
+}
+
diff --git a/checks/std/cpp_lib_coroutine_20.cpp b/checks/std/cpp_lib_coroutine_20.cpp
new file mode 100644
index 000000000..c44410325
--- /dev/null
+++ b/checks/std/cpp_lib_coroutine_20.cpp
@@ -0,0 +1,32 @@
+//  This file was automatically generated on Tue Oct 17 18:26:45 2023
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  Use, modification and distribution are 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/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+#ifdef __has_include
+#if __has_include(<version>)
+#include <version>
+#endif
+#endif
+
+#include <coroutine>
+
+#ifndef __cpp_lib_coroutine
+#error "Macro << __cpp_lib_coroutine is not set"
+#endif
+
+#if __cpp_lib_coroutine < 201902
+#error "Macro __cpp_lib_coroutine had too low a value"
+#endif
+
+int main( int, char *[] )
+{
+   return 0;
+}
+
diff --git a/tools/generate.cpp b/tools/generate.cpp
index 01b735970..6e97ac0d9 100644
--- a/tools/generate.cpp
+++ b/tools/generate.cpp
@@ -437,6 +437,7 @@ void write_std_config_checks()
    write_std_check("__cpp_size_t_suffix", 202011, "", 23);
    write_std_check("__cpp_static_call_operator", 202207, "", 23);
    // C++20
+   write_std_check("__cpp_lib_coroutine", 201902, "coroutine", 20);
    write_std_check("__cpp_impl_destroying_delete", 201806, "", 20);
    write_std_check("__cpp_lib_destroying_delete", 201806, "new", 20);
    write_std_check("__cpp_char8_t", 201811, "", 20);
@@ -446,6 +447,7 @@ void write_std_config_checks()
    write_std_check("__cpp_nontype_template_parameter_class", 201806, "", 20);
    write_std_check("__cpp_lib_char8_t", 201811, "atomic", 20); 
    write_std_check("__cpp_lib_concepts", 201806, "concepts", 20);
+   write_std_check("__cpp_concepts", 201907, "", 20);
    write_std_check("__cpp_lib_constexpr_swap_algorithms", 201806, "algorithm", 20);
    write_std_check("__cpp_lib_constexpr_misc", 201811, "array", 20);
    write_std_check("__cpp_lib_bind_front", 201811, "functional", 20);