diff --git a/doc/changelog.txt b/doc/changelog.txt
index 751dcef..5493060 100644
--- a/doc/changelog.txt
+++ b/doc/changelog.txt
@@ -1,5 +1,7 @@
 0.5 "" (released xx.xx.2010)
 
+  * Ported to Python 2.4.
+
 0.4 "Nikita" (released 3.3.2010)
 
   * Added support for Windows systems.
diff --git a/doc/todo.txt b/doc/todo.txt
index e69de29..2339cc7 100644
--- a/doc/todo.txt
+++ b/doc/todo.txt
@@ -0,0 +1,2 @@
+- Support lzip archives
+- Support zoo archives
diff --git a/patool b/patool
index dbb0447..495d0ce 100755
--- a/patool
+++ b/patool
@@ -18,8 +18,8 @@
 patool [extract|list] [sub-command-options] <archive-file>
 """
 import sys
-if not hasattr(sys, "version_info") or sys.version_info < (2, 5, 0, "final", 0):
-    raise SystemExit("Error, this script needs Python >= 2.5 installed")
+if not hasattr(sys, "version_info") or sys.version_info < (2, 4, 0, "final", 0):
+    raise SystemExit("This program requires Python 2.4 or later.")
 from patoolib import handle_archive, list_formats, baker
 
 
diff --git a/setup.py b/setup.py
index fc4c76f..7e8695a 100644
--- a/setup.py
+++ b/setup.py
@@ -19,9 +19,8 @@ Setup file for the distuils module.
 """
 
 import sys
-if not (hasattr(sys, 'version_info') or
-        sys.version_info < (2, 5, 0, 'final', 0)):
-    raise SystemExit("This program requires Python 2.5 or later.")
+if not hasattr(sys, "version_info") or sys.version_info < (2, 4, 0, "final", 0):
+    raise SystemExit("This program requires Python 2.4 or later.")
 import os
 from distutils.core import setup