diff --git a/requirements.txt b/requirements.txt
index 1e0e372..6c9d963 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ backports-abc==0.5
 backports.functools-lru-cache==1.5
 certifi==2018.11.29
 chardet==3.0.4
-cryptography==2.1.4
+cryptography==3.2
 cycler==0.10.0
 Cython==0.29.1
 dnspython==1.15.0