diff --git a/prism/CHANGELOG.txt b/prism/CHANGELOG.txt
index 2cf329c4..ef1719eb 100644
--- a/prism/CHANGELOG.txt
+++ b/prism/CHANGELOG.txt
@@ -2,9 +2,21 @@ This file contains details of the changes in each new version of PRISM.
 
 -----------------------------------------------------------------------------
 Latest changes (mostly reverse chronological):
-[correct wrt svn rev 4915]
------------------------------------------------------------------------------
-
+[correct wrt svn rev 5476]
+-----------------------------------------------------------------------------
+
+* Prototype reactions-to-PRISM translator
+* New options to plot graphs for simulation paths in the GUI
+* Improvements to simulation path generation using -simpath switch
+  - more efficient path generation (on-the-fly) where possible
+  - new 'snapshot' option to only show states at certain time-points
+  - rewards are not displayed by default; use 'rewards' option to show
+* Easier zoom-out (double click) in graphs in GUI
+* Additional log output of progress for numerical solution techniques
+* Changes to PRISM default settings
+  - settings file ~/.prism only read by GUI (not command-line) by default
+  - new switch -settings to read a settings file from command-line PRISM
+* New switch -exportdigital for exporting PRISM code generated by digital clocks PTA engine
 * New scripts: prism-auto/prism-test/prism-filler
 * Added new "printall" filter.
 * Added viewing of witness/counterexample for E[F...] in GUI.
@@ -18,7 +30,7 @@ Latest changes (mostly reverse chronological):
   - consistent deadlock handling everywhere, incl. GUI and experiments
   - changes to model-level deadlock storage (symbolic and explicit)
 * Explicit engine added as true engine, also available from GUI
-* New MDP solution methods (explicit engine only: ...)
+* New MDP solution methods (explicit engine only: ...) -politer
 
 -----------------------------------------------------------------------------
 Version 4.0.3 (released 30/1/2012)