diff --git a/requirements.txt b/requirements.txt
index b69cde1..0de36c6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 bcrypt==3.1.7
-certifi==2019.9.11
+certifi==2019.11.28
 cffi==1.13.2
 chardet==3.0.4
 colander==1.7.0