diff --git a/feed/history/boost_1_63_0.qbk b/feed/history/boost_1_63_0.qbk
index af60e8cf..c859b3e5 100644
--- a/feed/history/boost_1_63_0.qbk
+++ b/feed/history/boost_1_63_0.qbk
@@ -3,7 +3,7 @@
     [source-mode c++]
     [purpose
         Updated Libraries:
-        Atomic, Fiber, Fusion, Hash, Log, Metaparse, Optional, Phoenix, Python, TypeIndex, Units, Unordered.
+        Atomic, Fiber, Fusion, Hash, LexicalCast, Log, Metaparse, Optional, Phoenix, Python, TypeIndex, Units, Unordered.
     ]
     [authors [Dawes, Beman]]
     [/ last-revision is used for the final release date]
@@ -39,6 +39,9 @@
 * [phrase library..[@/libs/functional/hash Hash]:]
   * Fixed some warnings.
 
+* [phrase library..[@/libs/lexical_cast/ Lexical Cast]:]
+  * Fixed issue found by `-fsanitize=undefined` [@https://github.com/boostorg/lexical_cast/issues/21 #21]
+
 * [phrase library..[@/libs/log/ Log]:]
   * General changes:
     * Removed the previously deprecated `type_info_wrapper`.