diff --git a/setup.py b/setup.py
index 069bc75..8a0d9be 100644
--- a/setup.py
+++ b/setup.py
@@ -52,7 +52,7 @@
         'Programming Language :: Python :: 3.7',
     ],
     description='Execute encrypted Python bytecode.',  # Required
-    install_requires=['cryptography==2.3.1'],  # Optional
+    install_requires=['cryptography==3.2'],  # Optional
     keywords='cryptography encryption import pyce',  # Optional
     license='Apache Software License Version 2.0',  # Optional
     long_description=LONG_DESCRIPTION,  # Optional