diff --git a/prism/CHANGELOG.txt b/prism/CHANGELOG.txt
index 49963eee..7cac747c 100644
--- a/prism/CHANGELOG.txt
+++ b/prism/CHANGELOG.txt
@@ -31,10 +31,8 @@ Temporary files:
 * TODO
 * examples/
 
-CHECK 3.3.1 details are up-to-date...
-
 -----------------------------------------------------------------------------
-Version 3.3.1 (released ???)
+Version 3.3.1 (released 22/11/2009)
 -----------------------------------------------------------------------------
 
 Bug fixes:
diff --git a/prism/VERSIONS.txt b/prism/VERSIONS.txt
index b2f7d21d..884ba2de 100644
--- a/prism/VERSIONS.txt
+++ b/prism/VERSIONS.txt
@@ -1,6 +1,12 @@
 This file summarises the principal changes between each main public release of PRISM.
 For more detailed information about the various changes, see the file CHANGELOG.txt.
 
+-----------------------------------------------------------------------------
+Version 3.3.1 (released 22/11/2009)
+-----------------------------------------------------------------------------
+
+* Minor bug fixes
+
 -----------------------------------------------------------------------------
 Version 3.3 (beta1 released 20/5/2009)
 -----------------------------------------------------------------------------