diff --git a/README.markdown b/README.markdown
--- a/README.markdown
+++ b/README.markdown
@@ -23,6 +23,8 @@
 
 A port of this design to scala is available from runarorama/machines
 
+Runar's slides are also available from https://dl.dropbox.com/u/4588997/Machines.pdf
+
 Contact Information
 -------------------
 
diff --git a/machines.cabal b/machines.cabal
--- a/machines.cabal
+++ b/machines.cabal
@@ -1,6 +1,6 @@
 name:          machines
 category:      Control, Enumerator
-version:       0.2.3
+version:       0.2.3.1
 license:       BSD3
 cabal-version: >= 1.10
 license-file:  LICENSE
@@ -11,7 +11,11 @@
 bug-reports:   http://github.com/ekmett/machines/issues
 copyright:     Copyright (C) 2012 Edward A. Kmett
 synopsis:      Networked stream transducers
-description:   Networked stream transducers
+description:
+  Networked stream transducers
+  .
+  Rúnar Bjarnason's talk on machines can be downloaded from:
+  <https://dl.dropbox.com/u/4588997/Machines.pdf>
 build-type:    Custom
 tested-with:   GHC == 7.4.1
 extra-source-files: