diff --git a/setup.py b/setup.py
index 51a1fa063..2ef3ba7fb 100644
--- a/setup.py
+++ b/setup.py
@@ -74,10 +74,11 @@
         'tox',
         'wheel==0.30.0',
         'azure-storage-blob>=1.3.1,<2.0.0',
+        'isort==4.3.21'
     ],
     extras_require={
         ":python_version<'3.0'": ['pylint==1.9.2', 'futures'],
-        ":python_version>='3.0'": ['pylint==2.5.3']
+        ":python_version>='3.0'": ['pylint==2.3.0']
     },
     package_data={
         'azdev.config': ['*.*', 'cli_pylintrc', 'ext_pylintrc'],