diff --git a/requirements-dev.txt b/requirements-dev.txt
index 97be808d..a7961d60 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,7 +4,7 @@ sphinx==1.6.3
 pep257==0.7.0
 -e .
 aioredis==0.3.3
-cryptography==2.0.2
+cryptography==2.0.3
 pynacl==1.1.2
 pytest-aiohttp==0.1.3
 pytest-cov==2.5.1