diff --git a/data_scientist/project_4_analyzing_subway_data/requirements.txt b/data_scientist/project_4_analyzing_subway_data/requirements.txt
index 8146819..861001f 100644
--- a/data_scientist/project_4_analyzing_subway_data/requirements.txt
+++ b/data_scientist/project_4_analyzing_subway_data/requirements.txt
@@ -3,7 +3,7 @@ attrs==19.1.0
 backcall==0.1.0
 beautifulsoup4==4.8.0
 bleach==3.1.0
-certifi==2019.6.16
+certifi==2022.12.7
 chardet==3.0.4
 colorama==0.4.1
 cycler==0.10.0