diff --git a/docket/requirements.txt b/docket/requirements.txt
index ae48772..136361b 100644
--- a/docket/requirements.txt
+++ b/docket/requirements.txt
@@ -8,7 +8,7 @@ certifi==2017.4.17
 cffi==1.10.0
 chardet==3.0.4
 click==6.7
-cryptography==1.9
+cryptography==3.2
 enum34==1.1.6
 Flask==0.12.2
 Flask-RESTful==0.3.6