diff --git a/requirements.txt b/requirements.txt
index c130b10..98af3f4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 certifi==2020.12.5
-cffi==1.14.5
+cffi==1.15.1
 chardet==4.0.0
 cryptography==3.4.6
 DateTime==4.3