diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 7d47522..e7dc7ee
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ cffi==1.13.2
 channels==2.3.1
 channels-redis==2.4.1
 constantly==15.1.0
-cryptography==2.8
+cryptography==3.2
 daphne==2.3.0
 Django==2.2.6
 django-phonenumber-field==3.0.1