diff --git a/requirements_dev.txt b/requirements_dev.txt
index 47db5c5..474fcac 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,7 +6,7 @@ flake8==3.9.0
 tox==3.23.0
 coverage==5.5
 Sphinx==3.4.3
-cryptography==3.4.6
+cryptography==3.4.7
 PyYAML==5.4.1
 pytest==6.2.2
 pytest-runner==5.3.0