diff --git a/feed/history/boost_1_70_0.qbk b/feed/history/boost_1_70_0.qbk
index da6bb844..3878afe2 100644
--- a/feed/history/boost_1_70_0.qbk
+++ b/feed/history/boost_1_70_0.qbk
@@ -33,6 +33,11 @@
   * `shared_ptr` is movable and supports aliasing ([ticket 1234]).
 ]
 
+* [phrase library..[@/libs/poly_collection/ PolyCollection]:]
+  * Improved handling of stateful allocators and allocator propagation traits,
+    after an error reported by Billy O'Neal ([github_pr poly_collection 9]).
+  * Fixed a potentially serious bug with an internal cache structure.
+
 * /TODO/
 
 [endsect]