diff --git a/requirements.txt b/requirements.txt
index 52294b9..2cfdcd0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 alembic==0.9.2
-certifi==2017.7.27.1
+certifi==2017.11.5
 chardet==3.0.4
 click==6.7
 Flask==0.12.1