diff --git a/requirements.txt b/requirements.txt
index 81720e06..0f6af50d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ cffi==1.10.0
 chardet==3.0.4
 click==6.7
 contextlib2==0.5.5
-cryptography==2.4.2
+cryptography==3.2
 cytoolz==0.9.0.1
 eth-abi==1.2.2
 eth-account==0.3.0