diff --git a/doc/release-notes/teachpack/HISTORY.txt b/doc/release-notes/teachpack/HISTORY.txt
index 3c864c20f3..8eaff4b18f 100644
--- a/doc/release-notes/teachpack/HISTORY.txt
+++ b/doc/release-notes/teachpack/HISTORY.txt
@@ -1,3 +1,9 @@
+------------------------------------------------------------------------
+Version 5.1				  [Tue Feb  8 13:05:17 EST 2011]
+
+* to-draw (old name: on-draw) is now required for big-bang expressions 
+* bug fixes in world, image, etc 
+
 ------------------------------------------------------------------------
 Version 5.0.2.  			  [Wed Oct 27 18:30:26 EDT 2010]