diff --git a/docs/emails/cryptography/7.md b/docs/emails/cryptography/7.md
index 16f76b6..730ca46 100644
--- a/docs/emails/cryptography/7.md
+++ b/docs/emails/cryptography/7.md
@@ -4,6 +4,7 @@ title: Bitcoin P2P e-cash paper
 grand_parent: Emails
 parent: Cryptography Mailing List
 nav_order: 7
+date: 2008-11-09 03:09:49 UTC
 ---
 
 # Bitcoin P2P e-cash paper