diff --git a/requirements.txt b/requirements.txt
index f15abc0..377196c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ backcall==0.1.0
 bleach==3.3.0
 bokeh==0.13.0
 branca==0.3.0
-certifi==2018.4.16
+certifi==2022.12.7
 cffi==1.11.5
 chardet==3.0.4
 click==6.7
diff --git a/setup.py b/setup.py
index 7305c7b..9880dff 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@
 requirements  = ['Click>=6.0',
 'bokeh==0.13.0',
 'branca==0.3.0',
-'certifi==2018.4.16',
+'certifi==2022.12.7',
 'chardet==3.0.4',
 'click==6.7',
 'cloudpickle==0.5.3',