diff --git a/general-info/release-19a.txt b/general-info/release-19a.txt
index ac796755683c6201532724baf4af6c697da3558e..7f9a5dc113ce0da0aabc84839a3ea7a220a56e23 100644
--- a/general-info/release-19a.txt
+++ b/general-info/release-19a.txt
@@ -134,6 +134,7 @@ New in this release:
      - Lambda-lists of the form (X . Y) in DESTRUCTURING-BIND and macros
        are now equivalent to (X &REST Y).
      - LAST, BUTLAST, NBUTLAST accepting bignum counts.
+     - WITH-OUTPUT-TO-STRING accepting :ELEMENT-TYPE.
 
   * Numerous bugfixes:
      - NSET-EXCLUSIVE-OR returns the same results as SET-EXCLUSIVE-OR