diff --git a/doc/release-notes/mred/HISTORY.txt b/doc/release-notes/mred/HISTORY.txt
index 1a5d0565..bb043fc3 100644
--- a/doc/release-notes/mred/HISTORY.txt
+++ b/doc/release-notes/mred/HISTORY.txt
@@ -1,4 +1,4 @@
-Version 4.2.1, August 2009
+Version 4.2.1, July 2009
 
 Minor bug fixes