diff --git a/NOTICE b/NOTICE
index a401f75..3a6e4f7 100644
--- a/NOTICE
+++ b/NOTICE
@@ -1,2 +1,2 @@
 Preserves: an Expressive Data Language
-Copyright 2018-2020 Tony Garnock-Jones
+Copyright 2018-2021 Tony Garnock-Jones
diff --git a/README.md b/README.md
index 49aac64..ea07b41 100644
--- a/README.md
+++ b/README.md
@@ -45,4 +45,4 @@ Tony Garnock-Jones <tonyg@leastfixedpoint.com>
 The contents of this repository are made available to you under the
 [Apache License, version 2.0](LICENSE)
 (<http://www.apache.org/licenses/LICENSE-2.0>), and are Copyright
-2018-2020 Tony Garnock-Jones.
+2018-2021 Tony Garnock-Jones.