diff --git a/requirements.txt b/requirements.txt
index d59e9ff..776b91f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 gunicorn>=19.7.1
-certifi==2019.9.11
+certifi==2022.12.7
 cftime==1.0.3.4
 Click==7.0
 dash==1.4.0