diff -r 7729a1ad6b58 -r b6b827c01ffc COPYRIGHT
--- a/COPYRIGHT	Mon Jul 10 22:06:42 2023 +0200
+++ b/COPYRIGHT	Mon Jul 10 22:31:24 2023 +0200
@@ -1,6 +1,6 @@
 ISABELLE COPYRIGHT NOTICE, LICENCE AND DISCLAIMER.
 
-Copyright (c) 1986-2022,
+Copyright (c) 1986-2023,
   University of Cambridge,
   Technische Universitaet Muenchen,
   and contributors.