diff --git a/requirements.txt b/requirements.txt
index 45fbdae..416e449 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ aniso8601==8.0.0
 asn1crypto==1.4.0
 attrs==19.3.0
 certifi==2020.6.20
-cffi==1.14.1
+cffi==1.15.0
 click==7.1.2
 cryptography==3.0
 dnspython==2.0.0