try to be backwards compat

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index a3125611f..6207ad09b 100644
--- a/setup.py
+++ b/setup.py
@@ -59,7 +59,7 @@ def get_environment_marker_support_level():
 def main():
     extras_require = {}
     install_requires = [
-        "py>=1.6.0",
+        "py>=1.5.0",
         "six>=1.10.0",
         "setuptools",
         "attrs>=17.4.0",