diff --git a/requirements_dev.txt b/requirements_dev.txt
index 90968b9..d3448e0 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,7 +6,7 @@ flake8==3.4.1
 tox==2.9.1
 coverage==5.5
 Sphinx==3.2.1
-cryptography==41.0.3
+cryptography==41.0.6
 PyYAML==5.4.1
 pytest==3.2.3
 pytest-runner==6.0.0