diff --git a/README.md b/README.md
index 6001c32..ae8f836 100644
--- a/README.md
+++ b/README.md
@@ -129,4 +129,4 @@ developer looking for new challenges, we'd like to hear from you!
 - <https://www.webfactory.de>
 - <https://twitter.com/webfactory>
 
-Copyright 2019 webfactory GmbH, Bonn. Code released under [the MIT license](LICENSE).
+Copyright 2019 – 2020 webfactory GmbH, Bonn. Code released under [the MIT license](LICENSE).