diff --git a/requirements.txt b/requirements.txt
index c3f93be..1774ab2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ bz2file==0.98
 certifi==2016.2.28
 cffi==1.8.3
 configparser==3.5.0
-cryptography==1.5.2
+cryptography==3.3.2
 cssselect==0.9.2
 cycler==0.10.0
 decorator==4.0.9