diff --git a/prism/CHANGELOG.txt b/prism/CHANGELOG.txt
index 0df9672d..f2ec67d2 100644
--- a/prism/CHANGELOG.txt
+++ b/prism/CHANGELOG.txt
@@ -2,6 +2,16 @@ This file contains details of the changes in each new version of PRISM,
 including development and beta versions. For a less detailed overview
 of the main changes in each public release, see the file VERSIONS.txt.
 
+Ongoing changes:
+
+* 64-bit Macs?
+* CTL model checking
+
+Latest changes (reverse chronological):
+[correct wrt svn rev ???]
+
+* ...
+
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 Version 3.3.beta1 (released 20/5/2009) (svn: trunk rev 1066)
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