diff --git a/requirements.txt b/requirements.txt
index 0b831a1..08b09dd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ botocore==1.10.62
 certifi==2018.4.16
 cffi==1.11.5
 chardet==3.0.4
-cryptography==2.2.2
+cryptography==3.2
 cycler==0.10.0
 docutils==0.14
 #freetype==2.9.1 - removing this so binder works