<?xml version="1.0"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en"><head><title>Twisted Documentation: Upgrading</title><link href="../howto/stylesheet.css" type="text/css" rel="stylesheet" /></head><body bgcolor="white"><h1 class="title">Upgrading</h1><div class="toc"><ol><li><a href="#auto0">Upgrading between versions of Twisted Core</a></li></ol></div><div class="content"><span></span><h2>Upgrading between versions of Twisted Core<a name="auto0"></a></h2><p> These documents describe code changes you may need to make to use a newer version of Twisted Core. Not all releases will require code changes. </p><ul><li><a href="2.0/index.html">Twisted 2.0</a></li></ul></div><p><a href="../howto/index.html">Index</a></p><span class="version">Version: 2.5.0</span></body></html>