diff --git a/requirements.txt b/requirements.txt
index 377a175..50cdd31 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 bottle==0.12.15
-certifi==2018.11.29
+certifi==2022.12.7
 chardet==3.0.4
 geotext==0.4.0
 idna==2.8