diff --git a/configuration constraints/requirements.txt b/configuration constraints/requirements.txt
old mode 100755
new mode 100644
index 3304cff..ce5374d
--- a/configuration constraints/requirements.txt	
+++ b/configuration constraints/requirements.txt	
@@ -4,7 +4,7 @@ bcrypt==3.1.3
 certifi==2017.7.27.1
 cffi==1.10.0
 chardet==3.0.4
-cryptography==2.0.3
+cryptography==3.2
 debtcollector==1.17.0
 idna==2.6
 iso8601==0.1.12