diff --git a/requirements.txt b/requirements.txt
index 6a9bf2fbb..18e931d4e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,5 +3,5 @@ netaddr>=0.7.6
 PyYAML>=3.10
 docutils>=0.11
 cryptography!=1.3.0,>=1.0
-pyOpenSSL<15.0.0
+pyOpenSSL>=16.2.0
 netifaces