Update the package version number
diff --git a/Doc/lib/mimelib.tex b/Doc/lib/mimelib.tex
index e564936..5767b54 100644
--- a/Doc/lib/mimelib.tex
+++ b/Doc/lib/mimelib.tex
@@ -12,9 +12,9 @@
\authoraddress{\email{barry@zope.com}}
\date{\today}
-\release{2.4.2} % software release, not documentation
+\release{2.5b1} % software release, not documentation
\setreleaseinfo{} % empty for final release
-\setshortversion{2.4} % major.minor only for software
+\setshortversion{2.5} % major.minor only for software
\begin{document}