diff --git a/pep-0552.rst b/pep-0552.rst
index e6b7d957c..e2b835df3 100644
--- a/pep-0552.rst
+++ b/pep-0552.rst
@@ -8,6 +8,7 @@ Type: Standards Track
 Content-Type: text/x-rst
 Created: 2017-09-04
 Python-Version: 3.7
+Post-History: 2017-09-07
 
 
 Abstract