diff --git a/requirements.txt b/requirements.txt
index a137d11..44b5ee1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ asn1crypto==0.22.0
 cachetools==2.0.1
 cffi==1.10.0
 click==6.7
-cryptography==1.8.1
+cryptography==3.2
 daemonize==2.4.7
 dill==0.2.7.1
 enum34==1.1.6