diff -r 7736b754b37f -r 508b4f6431ae COPYRIGHT
--- 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.