diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 7e6a010a4ab..9f4c9d327c3 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -2,6 +2,7 @@
 
 	* include/std/version (__cpp_lib_three_way_comparison): Update value.
 	* libsupc++/compare (__cpp_lib_three_way_comparison): Likewise.
+	(__detail::__synth3way): Add noexcept-specifier.
 
 	* include/bits/stl_map.h (map): Define operator<=> and remove
 	operator< for C++20.