diff --git a/requirements.txt b/requirements.txt
index aee8d8f..5c8dff4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ asn1crypto==0.24.0
 bcrypt==3.1.7
 beautifulsoup4==4.8.0
 certifi==2019.6.16
-cffi==1.12.3
+cffi==1.17.1
 chardet==3.0.4
 cryptography==2.7
 defusedxml==0.6.0