diff --git a/doc/smart_ptr/changelog.adoc b/doc/smart_ptr/changelog.adoc
index d0351e7..0d54839 100644
--- a/doc/smart_ptr/changelog.adoc
+++ b/doc/smart_ptr/changelog.adoc
@@ -17,6 +17,11 @@ http://www.boost.org/LICENSE_1_0.txt
 
 * {cpp}03 is no longer supported, a {cpp}11 compiler is required.
   This includes GCC 4.8 or later, and MSVC 14.0 or later.
+* The functionality enabled by the macros `BOOST_SP_ENABLE_DEBUG_HOOKS`,
+  `BOOST_SP_USE_STD_ALLOCATOR`, `BOOST_SP_USE_QUICK_ALLOCATOR`,
+  `BOOST_AC_USE_SPINLOCK`, `BOOST_AC_USE_PTHREADS`, `BOOST_SP_USE_SPINLOCK`,
+  and `BOOST_SP_USE_PTHREADS` has been deprecated and support for it
+  will be removed in a future release.
 
 ## Changes in 1.79.0