diff --git a/requirements.txt b/requirements.txt
index 3d018bd..a785384 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ certifi==2018.11.29
 cffi==1.12.1
 chardet==3.0.4
 Click==7.0
-cryptography==2.5
+cryptography==3.2
 flasgger==0.9.2
 Flask==1.0.2
 Flask-Cors==3.0.7