diff --git a/setup.py b/setup.py
index 750a6bd..3e7b48b 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@
     'autobahn==17.6.2',
     'twisted==17.5.0',
     'cryptography==2.0.3',
-    'pyOpenSSL==17.1.0',
+    'pyOpenSSL==17.5.0',
     'pgpy==0.4.2',
     'six==1.10.0'
   ],