diff --git a/requirements_dev.txt b/requirements_dev.txt
index 273f59b..3bb0cdf 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -4,6 +4,6 @@ bumpversion==0.6.0
 watchdog==0.10.3
 flake8==3.8.4
 coverage==5.3
-cryptography==3.4.6
+cryptography==38.0.4
 Sphinx==3.3.1
 sphinx-rtd-theme==0.5.0