diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 1dcdba2..a794c59
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ certifi==2018.4.16
 cffi==1.11.5
 chardet==3.0.4
 constantly==15.1.0
-cryptography==2.2.2
+cryptography==3.2
 cssselect==1.0.3
 gevent==1.3.1
 greenlet==0.4.13