X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/8459057864e8acfbbd91611cc44779310d6149dc..96e1245c1aad58dff560f929fd90972933a65341:/src/README

diff --git a/src/README b/src/README
index d9379f7f8..e335cc22e 100644
--- a/src/README
+++ b/src/README
@@ -2,6 +2,7 @@ THE EXIM MAIL TRANSFER AGENT VERSION 4
 --------------------------------------
 
 Copyright (c) 1995 - 2018 University of Cambridge.
+SPDX-License-Identifier: GPL-2.0-or-later
 See the file NOTICE for conditions of use and distribution.
 
 There is a book about Exim by Philip Hazel called "The Exim SMTP Mail Server",