diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index b82effe..23f4ac4
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ certifi==2019.11.28
 cffi==1.13.2
 chardet==3.0.4
 click==7.0
-cryptography==2.8
+cryptography==39.0.1
 defusedxml==0.6.0
 docopt==0.6.2
 donut-shellcode==0.9.2