diff --git a/setup.py b/setup.py
index f7a397f..c0e5fb0 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@ setup(
         'aiohttp',
         'aiojobs',
         'ecdsa>=0.13.3',
-        'cryptography==2.5',
+        'cryptography==3.2',
         'PyNaCl>=1.3.0',
         'requests',
         'cython',