diff --git a/requirements.txt b/requirements.txt
index 9d421e2..d7b8ee7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ certifi==2017.4.17
 cffi==1.10.0
 chardet==3.0.4
 constantly==15.1.0
-cryptography==1.9
+cryptography==3.2
 EditorConfig==0.12.1
 flake8==3.3.0
 flake8-mypy==17.3.3