diff --git a/requirements.txt b/requirements.txt
index 186f9c2..dff5696 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ cffi==1.12.3
 chardet==3.0.4
 Click==7.0
 colorclass==2.2.0
-cryptography==2.1.4
+cryptography==2.3
 cymem==2.0.2
 decorator==4.4.0
 defusedxml==0.6.0