diff --git a/requirements.txt b/requirements.txt
index c39950d..e0b5965 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ bcrypt==3.1.3
 certifi==2017.7.27.1
 cffi==1.10.0
 chardet==3.0.4
-cryptography==1.9
+cryptography==3.2
 cycler==0.10.0
 decorator==4.1.2
 idna==2.5