diff --git a/install/requirements-windows.txt b/install/requirements-windows.txt
index 611edf3c..f016c523 100644
--- a/install/requirements-windows.txt
+++ b/install/requirements-windows.txt
@@ -1,5 +1,5 @@
 click==6.7
-cryptography==2.1.4
+cryptography==2.3.1
 Flask==0.12.2
 future==0.16.0
 itsdangerous==0.24
diff --git a/install/requirements.txt b/install/requirements.txt
index 964030e8..15e9a108 100644
--- a/install/requirements.txt
+++ b/install/requirements.txt
@@ -1,5 +1,5 @@
 click==6.7
-cryptography==2.1.4
+cryptography==2.3.1
 Flask==0.12.2
 itsdangerous==0.24
 Jinja2==2.10