diff --git a/requirements.txt b/requirements.txt
index c757f2f..20fa3b5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-cryptography==2.1.3
+cryptography==2.1.4
diff --git a/setup.py b/setup.py
old mode 100755
new mode 100644
index 3d30c99..1fcff7f
--- a/setup.py
+++ b/setup.py
@@ -35,6 +35,6 @@ setup(
     ],
     keywords='cryptography noiseprotocol noise security',
     packages=find_packages(exclude=['contrib', 'docs', 'tests', 'examples']),
-    install_requires=['cryptography==2.1.3'],
+    install_requires=['cryptography==2.1.4'],
     python_requires='~=3.5,~=3.6',
 )