diff --git a/requirements_dev.txt b/requirements_dev.txt
index 30dbdc2..7b54c1b 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -7,7 +7,7 @@ tox==3.13.2
 coverage==4.5.4
 pytest-aiohttp==0.3.0
 Sphinx==2.1.2
-cryptography==2.7
+cryptography==44.0.0
 PyYAML==5.1.2
 pytest==5.0.1
 docutils==0.15.2