diff --git a/requirements.txt b/requirements.txt
index 3eef967..b6fba60 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 attrs==19.3.0
 backcall==0.1.0
 bleach==3.1.4
-certifi==2019.11.28
+certifi==2022.12.7
 colorlover==0.3.0
 cycler==0.10.0
 Cython==0.29.16