diff -up ./setup.py.orig ./setup.py
--- ./setup.py.orig	2017-01-24 20:07:20.000000000 +0100
+++ ./setup.py	2017-01-26 10:02:33.152574771 +0100
@@ -25,8 +25,7 @@ if (version_info[0] == 2 and version_inf
 else:
     deps.append("requests>=1.0,!=2.12.0,!=2.12.1,<3.0")
 
-# this version of pycryptodome is known to work and has a Windows wheel for py2.7, py3.3-3.6
-deps.append("pycryptodome>=3.4.3,<4")
+deps.append("pycrypto")
 
 # shutil.get_terminal_size and which were added in Python 3.3
 if version_info[0] == 2: