diff --git a/requirements_dev.txt b/requirements_dev.txt
index 8d57d1a93..6a88a1a2f 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,6 +6,6 @@ flake8==3.7.7
 tox==3.8.6
 coverage==4.5.3
 Sphinx==2.0.1
-cryptography==2.6.1
+cryptography==3.2
 PyYAML==5.1