diff --git a/tools/visualize-pdr/requirements.txt b/tools/visualize-pdr/requirements.txt
index d4e33c1..3d308f6 100644
--- a/tools/visualize-pdr/requirements.txt
+++ b/tools/visualize-pdr/requirements.txt
@@ -2,7 +2,7 @@
 tabulate==0.8.9
 bcrypt==3.2.0
 cffi==1.14.5
-cryptography==3.4.7
+cryptography==39.0.1
 paramiko==2.10.1
 pycparser==2.20
 pynacl==1.4.0