diff --git a/Quiz/m3_funds_etfs_portfolio_optimization/l4_portfolio_optimization/requirements.txt b/Quiz/m3_funds_etfs_portfolio_optimization/l4_portfolio_optimization/requirements.txt
index f2f266c..584e886 100644
--- a/Quiz/m3_funds_etfs_portfolio_optimization/l4_portfolio_optimization/requirements.txt
+++ b/Quiz/m3_funds_etfs_portfolio_optimization/l4_portfolio_optimization/requirements.txt
@@ -7,7 +7,7 @@ plotly==2.2.3
 pyparsing==2.2.0
 python-dateutil==2.6.1
 pytz==2017.3
-requests==2.22.0
+requests==2.31.0
 scipy==1.0.0
 scikit-learn==0.19.1
 six==1.11.0