diff --git a/requirements.txt b/requirements.txt
index 9c6231f..b49c8f9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 asn1crypto==0.24.0
 cffi==1.11.5
-cryptography==2.3.1
+cryptography==3.2
 idna==2.7
 pycparser==2.18
 pycrypto==2.6.1