diff --git a/notary/requirements.txt b/notary/requirements.txt
index 80c3041..2f89797 100644
--- a/notary/requirements.txt
+++ b/notary/requirements.txt
@@ -8,7 +8,7 @@ blocksec2go==1.1
 certifi==2019.9.11
 cffi==1.12.3
 chardet==3.0.4
-cryptography==3.3.2
+cryptography==39.0.1
 cytoolz==0.10.0
 ecdsa==0.13.3
 eth-abi==2.0.0