diff --git a/requirements/dev.txt b/requirements/dev.txt
index 6039fc6..10c9d85 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -1,6 +1,6 @@
 -r test.txt
 coloredlogs==10.0
-cryptography==2.8
+cryptography==43.0.3
 watchdog==0.9.0
 flake8==3.7.8
 Sphinx==2.2.0