| diff --git a/setup.py b/setup.py | |
| index 7ba4b2a25f..5ce59e621d 100755 | |
| --- a/setup.py | |
| +++ b/setup.py | |
| @@ -43,7 +43,8 @@ def run_tests(self): | |
| requires = [ | |
| 'chardet>=3.0.2,<5', | |
| - 'idna>=2.5,<3', | |
| + 'idna>=2.5,<3 ; python_version < "3"', | |
| + 'idna>=2.5,<4 ; python_version >= "3"', | |
| 'urllib3>=1.21.1,<1.27', | |
| 'certifi>=2017.4.17' | |