diff --git a/requirements.txt b/requirements.txt
index 5ec06e9..1847424 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ celery==4.2.1
 certifi==2019.3.9
 cffi==1.12.2
 chardet==3.0.4
-cryptography==2.6.1
+cryptography==39.0.1
 Django==1.11.29
 django-adminlte2==0.4.1
 django-celery-beat==1.4.0