diff --git a/requirements.txt b/requirements.txt
index e9b8e82..847f978 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 cachetools==4.1.1
 certifi==2020.6.20
-cffi==1.14.2
+cffi==1.17.1
 chardet==3.0.4
 future==0.18.2
 google-api-core==1.22.1