X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/8a9be3ff4744d82018cce0cddf7f97b7cfe86a40..a3851eec63fb52c1f8121395d0092f4aff25405f:/sdk/cwl/setup.py

diff --git a/sdk/cwl/setup.py b/sdk/cwl/setup.py
index 762c6fda39..9e237952e5 100644
--- a/sdk/cwl/setup.py
+++ b/sdk/cwl/setup.py
@@ -57,7 +57,7 @@ setup(name='arvados-cwl-runner',
           'ruamel.yaml==0.13.7',
           'arvados-python-client>=0.1.20170526013812',
           'setuptools',
-          'ciso8601',
+          'ciso8601 >=1.0.0, <=1.0.4',
       ],
       data_files=[
           ('share/doc/arvados-cwl-runner', ['LICENSE-2.0.txt', 'README.rst']),