diff --git a/requirements.txt b/requirements.txt
index 1ab233f..e005337 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 blinker==1.3
 cffi==1.9.1
-cryptography==1.7.1
+cryptography==3.2
 docutils==0.12
 ecdsa==0.13.3
 enum34==1.1.6