diff --git a/backend/requirements.txt b/backend/requirements.txt
index 2d453cd..e71345f 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,7 +1,7 @@
 blinker==1.4
 cffi==1.13.2
 Click==7.0
-cryptography==2.8
+cryptography==42.0.8
 Flask==1.1.1
 Flask-Login==0.4.1
 Flask-SQLAlchemy==2.4.1