diff --git a/pep-0539.txt b/pep-0539.txt
index aaeb47f0c..1730afbf2 100644
--- a/pep-0539.txt
+++ b/pep-0539.txt
@@ -4,6 +4,7 @@ Version: $Revision$
 Last-Modified: $Date$
 Author: Erik M. Bray, Masayuki Yamamoto
 BDFL-Delegate: Nick Coghlan
+Python-Version: 3.7
 Status: Final
 Type: Standards Track
 Content-Type: text/x-rst