diff --git a/pep0/constants.py b/pep0/constants.py
index c0ea08f1f..28fd866ed 100644
--- a/pep0/constants.py
+++ b/pep0/constants.py
@@ -6,6 +6,7 @@ column_format = (u' %(type)1s%(status)1s %(number)4s  %(title)-' +
 header = u"""PEP: 0
 Title: Index of Python Enhancement Proposals (PEPs)
 Last-Modified: %s
+Version: N/A
 Author: David Goodger <goodger@python.org>,
         Barry Warsaw <barry@python.org>
 Status: Active