diff --git a/tasks.py b/tasks.py
index cff0aa6..1a2a160 100644
--- a/tasks.py
+++ b/tasks.py
@@ -20,7 +20,7 @@ def release(ctx):
     """
     # rebuild local tar.gz file for distribution
     shutil.rmtree('Corporal.egg-info')
-    ctx.run('python setup.py sdist --formats=gztar')
+    ctx.run('python -m build --sdist')
 
     # upload to public PyPI
     ctx.run('twine upload dist/Corporal-{}.tar.gz'.format(__version__))