diff --git a/tasks.py b/tasks.py
index 0c51e8c..530c097 100644
--- a/tasks.py
+++ b/tasks.py
@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2022 Lance Edgar
+#  Copyright © 2010-2024 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -45,5 +45,5 @@ def release(c):
     c.run('python -m build --sdist')
 
     # upload to public PyPI
-    filename = 'rattail-wave-{}.tar.gz'.format(__version__)
-    c.run('twine upload dist/{}'.format(filename))
+    filename = f'rattail_wave-{__version__}.tar.gz'
+    c.run(f'twine upload dist/{filename}')