diff --git a/index.html b/index.html
index 511245d..49fcc5a 100644
--- a/index.html
+++ b/index.html
@@ -24,9 +24,14 @@ explains the rationale behind this approach.
 The tehnology behind UMLGraph was used to draw many of the diagrams
 appearing in the book
 <a href="http://www.spinellis.gr/codereading">Code Reading: The Open Source Perspective</a> (Addison Wesley, 2003).
-In addition, Adam Feuer's
-<a href="http://www.zipcon.net/~adamf/software/PyUMLGraph/">PyUMLGraph</a>
-system extends the concept to Python programs.
+In addition,
+the Politecnico Di Torino SoftEng group has extended UMLGraph into
+the <a href="http://softeng.polito.it/projects/XUG/">XUG</a>
+reverse engineering tool, and
+Adam Feuer's
+<a href="http://www.python.org/pypi/PyUMLGraph">PyUMLGraph</a>
+system applies the concept to Python programs,
+
 Finally,
 <a href="http://martinfowler.com">Martin Fowler</a> writes:
 <blockquote>
diff --git a/web/index.html b/web/index.html
index 511245d..49fcc5a 100644
--- a/web/index.html
+++ b/web/index.html
@@ -24,9 +24,14 @@ explains the rationale behind this approach.
 The tehnology behind UMLGraph was used to draw many of the diagrams
 appearing in the book
 <a href="http://www.spinellis.gr/codereading">Code Reading: The Open Source Perspective</a> (Addison Wesley, 2003).
-In addition, Adam Feuer's
-<a href="http://www.zipcon.net/~adamf/software/PyUMLGraph/">PyUMLGraph</a>
-system extends the concept to Python programs.
+In addition,
+the Politecnico Di Torino SoftEng group has extended UMLGraph into
+the <a href="http://softeng.polito.it/projects/XUG/">XUG</a>
+reverse engineering tool, and
+Adam Feuer's
+<a href="http://www.python.org/pypi/PyUMLGraph">PyUMLGraph</a>
+system applies the concept to Python programs,
+
 Finally,
 <a href="http://martinfowler.com">Martin Fowler</a> writes:
 <blockquote>