diff --git a/requirements.txt b/requirements.txt
index 0780b07..78ea18e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ pytest==5.1.2
 Flask==1.1.1
 pubnub==4.1.6
 requests==2.22.0
-cryptography==2.7
\ No newline at end of file
+cryptography==3.2
\ No newline at end of file