diff --git a/requirements_dev.txt b/requirements_dev.txt
index 971f7e0..4a54c5a 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -7,7 +7,7 @@ certifi==2022.12.7
 cffi==1.10.0
 chardet==3.0.4
 coverage==4.4.1
-cryptography==2.0.2
+cryptography==39.0.1
 docutils==0.13.1
 flake8==3.4.1
 idna==2.5