diff --git a/requirements.txt b/requirements.txt
index d169468..fd4dccc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ cffi==1.13.2
 chardet==3.0.4
 Click==7.0
 coverage==4.5.4
-cryptography==2.8
+cryptography==3.2
 decorator==4.4.1
 firebase-admin==3.2.1
 Flask==1.1.1