diff --git a/requirements/heroku.txt b/requirements/heroku.txt
index 40a885c..62bc66b 100644
--- a/requirements/heroku.txt
+++ b/requirements/heroku.txt
@@ -1,7 +1,7 @@
 alembic==0.9.3
 bleach==3.1.0
 blinker==1.4
-certifi==2018.11.29
+certifi==2022.12.7
 chardet==3.0.4
 click==6.7
 coverage==4.4.1