X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/c56098048193b9ba8597b55c761af07a7617c026..46aadf6a64881e932adb4c54cb1a8c4b22e84d67:/sdk/python/setup.py

diff --git a/sdk/python/setup.py b/sdk/python/setup.py
index 126b12f156..d28df09987 100644
--- a/sdk/python/setup.py
+++ b/sdk/python/setup.py
@@ -55,6 +55,7 @@ setup(name='arvados-python-client',
           'ruamel.yaml >=0.15.54, <0.17.11',
           'setuptools',
           'ws4py >=0.4.2',
+          'protobuf<4.0.0dev'
       ],
       classifiers=[
           'Programming Language :: Python :: 3',