diff --git a/requirements.txt b/requirements.txt
index 8754987..c75774a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ certifi==2018.11.29
 cffi==1.12.1
 chardet==3.0.4
 colorlog==4.0.2
-cryptography==3.3.2
+cryptography==39.0.1
 daemonize==2.5.0
 dnspython==1.15.0
 dnspython3==1.15.0