diff --git a/doc/release-notes/mred/HISTORY.txt b/doc/release-notes/mred/HISTORY.txt
index cd3c6ea544..4675ac45d7 100644
--- a/doc/release-notes/mred/HISTORY.txt
+++ b/doc/release-notes/mred/HISTORY.txt
@@ -1,3 +1,9 @@
+Version 4.2.3, November 2009
+
+Minor bug fixes
+
+----------------------------------------------------------------------
+
 Version 4.2.2, September 2009
 
 Minor bug fixes
diff --git a/doc/release-notes/mzscheme/HISTORY.txt b/doc/release-notes/mzscheme/HISTORY.txt
index 925bea770d..1c35a4436d 100644
--- a/doc/release-notes/mzscheme/HISTORY.txt
+++ b/doc/release-notes/mzscheme/HISTORY.txt
@@ -1,3 +1,8 @@
+Version 4.2.3, November 2009
+Changed _pointer (in scheme/foreign) to mean a pointer that does not
+ refer to GCable memory; added _gcpointer
+Added scheme/vector
+
 Version 4.2.2, September 2009
 Added scheme/unsafe/ops
 Added print-syntax-width