diff --git a/requirements.txt b/requirements.txt
index ff73b4c..ecb9a24 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ certifi==2019.9.11
 cffi==1.12.3
 chardet==3.0.4
 crypto==1.4.1
-cryptography==3.3.2
+cryptography==39.0.1
 dnspython==1.16.0
 gcloud==0.18.3
 googleapis-common-protos==1.6.0