diff --git a/medtracker/requirements.txt b/medtracker/requirements.txt
old mode 100755
new mode 100644
index 2cbc3df..b738991
--- a/medtracker/requirements.txt
+++ b/medtracker/requirements.txt
@@ -4,7 +4,7 @@ billiard==3.3.0.22
 blinker==1.4
 celery==3.1.20
 cffi==1.5.0
-cryptography==1.2.2
+cryptography==3.3.2
 DateTime==4.0.1
 email==4.0.2
 enum34==1.1.2