Update setup.py

tbarbugli · web-flow · commit 151bce5b0f0e · 2019-11-02T08:19:17.000-06:00
diff --git a/setup.py b/setup.py
@@ -16,7 +16,7 @@
 if sys.version_info < (2, 7, 9):
     requests = "requests[security]>=2.4.1,<3"
 
-install_requires = ["pycryptodomex>=3.4.7", requests, "six>=1.8.0"]
+install_requires = ["pycryptodomex>=3.4.7,<4", requests, "six>=1.8.0"]
 
 if sys.version_info < (2, 7, 0):
     install_requires.append("pyOpenSSL<18.0.0")
