diff --git a/requirements.txt b/requirements.txt
index 499e25a..0fe363f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ bokeh==2.1.1
 branca==0.3.1
 Brotli==1.0.7
 cdsapi==0.3.0
-certifi==2020.6.20
+certifi==2022.12.7
 cftime==1.1.3
 chardet==3.0.4
 click==7.1.2