diff --git a/requirements.txt b/requirements.txt
index fae05b6..5d3afbb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ asn1crypto==0.24.0
 certifi==2019.9.11
 chardet==3.0.4
 Click==7.0
-cryptography==2.1.4
+cryptography==2.3
 enum34==1.1.6
 Flask==1.1.1
 gyp==0.1