diff --git a/requirements.txt b/requirements.txt
index 5ea056c..1a2b8db 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ bioinfokit==1.0.0
 blis==0.4.1
 bokeh==2.2.3
 catalogue==1.0.0
-certifi==2020.6.20
+certifi==2022.12.7
 chardet==3.0.4
 click==7.1.2
 cloudpickle==1.6.0