diff --git a/requirements_dev.txt b/requirements_dev.txt
index 3d64f42..7525c83 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,7 +5,7 @@ watchdog==2.1.8
 flake8==4.0.1
 tox==3.25.0
 coverage==6.2
-cryptography==35.0.0
+cryptography==38.0.2
 Sphinx==4.5.0
 PyYAML==6.0
 pytest==6.2.5