diff --git a/requirements.txt b/requirements.txt
index 8b6bb6d..a891e38 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,5 +5,5 @@
 #    pip-compile setup.py
 #
 cffi==1.14.4              # via cryptography
-cryptography==3.4.4
+cryptography==39.0.1
 pycparser==2.20           # via cffi