diff --git a/requirements.txt b/requirements.txt
index 8bd1509..af1870e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ bidict==0.18.3
 black==19.3b0
 bleach==3.1.0
 bumpversion==0.5.3
-certifi==2019.6.16
+certifi==2022.12.7
 cftime==1.1.0
 chardet==3.0.4
 Click==7.0