diff --git a/files.html b/files.html
index 312632f..02aeaa2 100644
--- a/files.html
+++ b/files.html
@@ -591,7 +591,7 @@ print('C')</code></pre>
 <h2 id=furtherreading>Further Reading</h2>
 
 <ul>
-<li><a href=http://docs.python.org/tutorial/inputoutput.html#reading-and-writing-files>Reading and writing files</a> in the Python.org tutorial
+<li><a href=http://docs.python.org/py3k/tutorial/inputoutput.html#reading-and-writing-files>Reading and writing files</a> in the Python.org tutorial
 <li><a href=http://docs.python.org/3.1/library/io.html><code>io</code> module</a>
 <li><a href=http://docs.python.org/3.1/library/stdtypes.html#file-objects>Stream objects</a>
 <li><a href=http://docs.python.org/3.1/library/stdtypes.html#context-manager-types>Context manager types</a>