diff --git a/racket/collects/racket/HISTORY.txt b/racket/collects/racket/HISTORY.txt
index 85018bfe32..04fea1b7a5 100644
--- a/racket/collects/racket/HISTORY.txt
+++ b/racket/collects/racket/HISTORY.txt
@@ -1,3 +1,7 @@
+Version 6.10, July 2017
+Extract OS adapters to the "rktio" library
+Bug repairs and other changes noted in the documentation
+
 Version 6.9, April 2017
 Bug repairs and other changes noted in the documentation