diff --git a/requirements_dev.txt b/requirements_dev.txt
index 00dee97..8bc9bb6 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,6 +6,6 @@ flake8==3.2.1
 tox==2.4.1
 coverage==4.3.4
 Sphinx==1.5
-cryptography==1.7.1
+cryptography==1.7.2
 PyYAML==3.12
 pytest==3.0.5