diff --git a/requirements.txt b/requirements.txt
index b681225..4301c36 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,8 +3,8 @@ pyopenssl==16.2.0
 requests==2.13.0
 
 # Secondary requirements
-cffi==1.9.1
-cryptography==1.7.2
+cffi==1.10.0
+cryptography==1.8.1
 idna==2.5
 pyasn1==0.2.3
 pycparser==2.17