Tested with latest cryptography 42.x

Author: rayluo

setup.cfg

@@ -54,7 +54,7 @@ install_requires =
     # And we will use the cryptography (X+3).0.0 as the upper bound,
     # based on their latest deprecation policy
     # https://cryptography.io/en/latest/api-stability/#deprecation
-    cryptography>=0.6,<44
+    cryptography>=0.6,<45
 
     mock; python_version<'3.3'