diff --git a/sub1/requirements.txt b/sub1/requirements.txt
index 0a9d77b..6ff8954 100644
--- a/sub1/requirements.txt
+++ b/sub1/requirements.txt
@@ -1,5 +1,5 @@
 branca==0.3.1
-certifi==2019.11.28
+certifi==2022.12.7
 chardet==3.0.4
 cycler==0.10.0
 folium==0.10.1