diff --git a/requirements_dev.txt b/requirements_dev.txt
index d3587f8..65b6c66 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,7 +6,7 @@ certifi==2019.11.28
 cffi==1.14.0
 chardet==3.0.4
 click==7.1.1
-cryptography==2.8
+cryptography==3.2
 docutils==0.16
 idna==2.9
 importlib-metadata==1.5.0