diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 41b2fb3..34f2af5
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ backports.functools-lru-cache==1.6.1
 backports.shutil-get-terminal-size==1.0.0
 Cartopy==0.18.0
 chardet==3.0.4
-cryptography==2.1.4
+cryptography==3.2
 cycler==0.10.0
 dataclasses==0.6
 decorator==4.1.2