diff --git a/chapter08/python.xml b/chapter08/python.xml
index 0f22ab2a9..d60378abb 100644
--- a/chapter08/python.xml
+++ b/chapter08/python.xml
@@ -90,6 +90,10 @@
     automatically re-run failed tests.  If a test failed but then passed
     when re-run, it should be considered as passed.</para>
 
+    <para>Two tests named <filename>test_xml_etree</filename> and
+    <filename>test_xml_etree_c</filename> are known to fail with expat-2.6.0
+    or newer.</para>
+
     <para>Install the package:</para>
 
 <screen><userinput remap="install">make install</userinput></screen>