diff --git a/mkdocs.yml b/mkdocs.yml
index c6db219..461f180 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -10,3 +10,4 @@ plugins:
          author: Thomas Berker
          cover_title: Theories of Science (KULT8850/1)
          cover_subtitle: Everything you need to know
+         copywrite: GPL3