diff --git a/requirements.txt b/requirements.txt
index 115d23c..163d81b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 asn1crypto==0.24.0
 bunch==1.0.1
 cffi==1.11.5
-cryptography==3.3.2
+cryptography==39.0.1
 idna==2.7
 nose==1.3.7
 pycparser==2.19