diff --git a/feed/history/boost_1_66_0.qbk b/feed/history/boost_1_66_0.qbk
index a4da2158..0f42065a 100644
--- a/feed/history/boost_1_66_0.qbk
+++ b/feed/history/boost_1_66_0.qbk
@@ -104,9 +104,9 @@
   * Maintenance fixes.
 
 * [phrase library..[@/libs/poly_collection/ PolyCollection]:]
-  * Boost.PolyCollection has been backported to GCC 4.8-9. In the case of GCC 4.8,
-    there are some limitations coming from deficiencies in the version of libstdc++-v3
-    this compiler uses:
+  * Boost.PolyCollection has been backported to GCC 4.8 to 4.9 and Clang 3.3 to 3.6. The
+    version of libstdc++-v3 shipped with GCC 4.8 (which can also be used by Clang) has
+    deficiencies that result in the following limitations when using Boost.PolyCollection:
       * Stateful allocators are not properly supported.
       * Allocator-extended move construction decays to allocator-extended copy construction.
       * Copy construction crashes if an exception is thrown during element copying.