diff --git a/CHANGES.txt b/CHANGES.txt
index 00938db..f67a08a 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -7,6 +7,8 @@
 
   - The monitor's load command can now fetch URLs.
 
+  - Python versions earlier than 2.6 are no longer supported.
+
 0.10 (2011-08-27)
 
   - Fixed long-standing bugs in relative branch calculations in the
diff --git a/setup.py b/setup.py
index 530a9dc..65c9b55 100644
--- a/setup.py
+++ b/setup.py
@@ -3,8 +3,8 @@ __version__ = '0.11-dev'
 import os
 import sys
 
-if sys.version_info[:2] < (2, 4):
-    msg = ("Py65 requires Python 2.4 or better, you are attempting to "
+if sys.version_info[:2] < (2, 6):
+    msg = ("Py65 requires Python 2.6 or later, you are attempting to "
            "install it using version %s.  Please install with a "
            "supported version" % sys.version)
     sys.stderr.write(msg)