diff --git a/requirements.txt b/requirements.txt
index a356194..5bd2489 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ cffi==1.11.5
 chardet==3.0.4
 click==6.7
 CommonMark==0.5.4
-cryptography==2.3.1
+cryptography==3.2
 definitions==0.2.0
 dnspython==1.15.0
 docutils==0.14