diff --git a/scripts/update-copyrights.py b/scripts/update-copyrights.py
--- a/scripts/update-copyrights.py
+++ b/scripts/update-copyrights.py
@@ -164,7 +164,7 @@ def main():
         domain_extra={},
         split_re=r"(?<=copyright = u').*(?= by various authors)",
         normalize_name=lambda name: '',
-        format_f=lambda years, name: nice_years(years, '-', ', ') ,
+        format_f=lambda years, name: nice_years(years, '-', ', '),
         )