diff --git a/noxfile.py b/noxfile.py
index a86cb05..3c9d3e0 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -529,6 +529,7 @@ def _install_packages(session: Session, *packages_or_pip_args: str, **kwargs) ->
             '--dev',
             '--format=requirements.txt',
             f'--output={requirements_txt.name}',
+            '--without-hashes',
             external=True,
         )
         session.install(