diff --git a/requirements_dev.txt b/requirements_dev.txt
index 597c688..1fccbc0 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,7 +6,7 @@ flake8==2.6.0
 tox==2.3.1
 coverage==4.1
 Sphinx==1.6.2
-cryptography==41.0.4
+cryptography==41.0.6
 PyYAML==5.4
 nose
 tox-travis