diff --git a/doc/release-notes/teachpack/HISTORY.txt b/doc/release-notes/teachpack/HISTORY.txt
index ae902a89c9..438c8629c4 100644
--- a/doc/release-notes/teachpack/HISTORY.txt
+++ b/doc/release-notes/teachpack/HISTORY.txt
@@ -1,3 +1,13 @@
+------------------------------------------------------------------------
+Version 4.2.4				  [Thu Jan 28 12:02:01 EST 2010]
+
+* separated 2htdp/universe from htdp/image
+* 2htdp/universe contains some stupid hacks to improve performance 
+  -- to be changed with Matthew's advice  
+* error modified 
+* added a bunch of primitives for JPR 
+* fixed some other bugs 
+
 ------------------------------------------------------------------------
 Version 4.2.3				  [Sun Nov 22 19:25:01 EST 2009]