Add python_requires to help pip

1 files changed, 1 insertions, 0 deletions

diff --git a/setup.py b/setup.py
index 512296b..5ab8a98 100755
--- a/setup.py
+++ b/setup.py
@@ -68,6 +68,7 @@ setup(
         "requests>=2,<3",
         "blowfish>=0.6.1,<1.0",
     ],
+    python_requires=">=3.5",
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "Environment :: Console",