--- a/COPYRIGHT Mon Feb 10 22:32:29 2020 +0100
+++ b/COPYRIGHT Mon Feb 10 22:33:03 2020 +0100
@@ -1,6 +1,6 @@
ISABELLE COPYRIGHT NOTICE, LICENCE AND DISCLAIMER.
-Copyright (c) 1986-2019,
+Copyright (c) 1986-2020,
University of Cambridge,
Technische Universitaet Muenchen,
and contributors.