diff --git a/requirements.txt b/requirements.txt
index 35837f9..20758ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 attrs==19.3.0
 beautifulsoup4==4.9.0
 bs4==0.0.1
-cryptography==2.9.2
+cryptography==39.0.1
 Flask==1.1.2
 Flask-SQLAlchemy==2.4.1
 mechanize==0.4.5