diff --git a/requirements.txt b/requirements.txt
index 3ce5756..afe573c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ certifi==2019.11.28
 cffi==1.13.2
 chardet==3.0.4
 Click==7.0
-cryptography==2.8
+cryptography==39.0.1
 Flask==1.1.1
 google-api-python-client==1.7.11
 google-auth==1.10.0