diff --git a/requirements/dev.txt b/requirements/dev.txt
index 592196a..7dd86f9 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -5,7 +5,7 @@ wheel==0.33.6
 Sphinx==2.2.0
 flake8==3.7.8
 tox==3.14.0
-cryptography==2.8
+cryptography==42.0.7
 coverage==4.5.4
 pytest-cov==2.8.1
 pytest==5.2.1