diff --git a/conf.py b/conf.py
index fdffd08fbe27f6d97a20cf1790f1fa435b605f1a..3a182e99f4225e58fef68973e23fce37c06de6cd 100644
--- a/conf.py
+++ b/conf.py
@@ -77,7 +77,7 @@ master_doc = 'Docs/index'
 
 # General information about the project.
 project = 'PyDial3'
-copyright = '2015-2019, Dialogue Systems Group, University of Cambridge, 2019-2020, Dialogue Systems and Machine Learning Group, Heinrich-Heine University Düsseldorf \n <a href="https://www.uni-duesseldorf.de/home/footer/datenschutz.html" target=_blank>Datenschutz</a> \n <a href="https://www.uni-duesseldorf.de/home/footer/impressum.html" target=_blank>Impressum</a>'
+copyright = '2015-2019, Dialogue Systems Group, University of Cambridge, 2019-2021, Dialogue Systems and Machine Learning Group, Heinrich-Heine University Düsseldorf \n <a href="https://www.uni-duesseldorf.de/home/footer/datenschutz.html" target=_blank>Datenschutz</a> \n <a href="https://www.uni-duesseldorf.de/home/footer/impressum.html" target=_blank>Impressum</a>'
 author = 'Dialogue Systems Group, University of Cambridge, Dialogue Systems and Machine Learning Group, Heinrich-Heine University Düsseldorf'
 
 # The version info for the project you're documenting, acts as replacement for