diff --git a/webservice/src/requirements.txt b/webservice/src/requirements.txt
index 1b6ca98..d1591ef 100644
--- a/webservice/src/requirements.txt
+++ b/webservice/src/requirements.txt
@@ -1,6 +1,6 @@
 argparse==1.2.1
 backports.ssl-match-hostname==3.4.0.2
-certifi==2015.04.28
+certifi==2022.12.7
 futures==3.0.3
 tornado==4.2.1
 wsgiref==0.1.2