add python_requires constraint to setup.py (#1182)

1 files changed, 1 insertions, 0 deletions

diff --git a/setup.py b/setup.py
index b305b227..34b1c0d1 100644
--- a/setup.py
+++ b/setup.py
@@ -38,6 +38,7 @@ setup(
     long_description=open("README.rst").read(),
     install_requires=install_requirements,
     extras_require={"keyring": ["keyring >= 12.2.0"]},
+    python_requires=">=3.6",
     entry_points="""
         [console_scripts]
         pgcli=pgcli.main:cli