1 files changed, 1 insertions, 1 deletions
diff --git a/setup.py b/setup.py
index 3b506036..afa58560 100755
--- a/setup.py
+++ b/setup.py
@@ -47,6 +47,6 @@ setup(name='isort',
       scripts=['scripts/isort'],
       packages=['isort'],
       requires=['pies', 'natsort'],
-      install_requires=['pies>=1.0.3', 'natsort>=3.0.0'],
+      install_requires=['pies>=2.0.0<=3.0.0', 'natsort>=3.0.0'],
       cmdclass={'test': PyTest},
       **PyTest.extra_kwargs)