diff --git a/1-autocorrelation-time-bars/requirements.txt b/1-autocorrelation-time-bars/requirements.txt
index 4ed3c06..c3ef932 100644
--- a/1-autocorrelation-time-bars/requirements.txt
+++ b/1-autocorrelation-time-bars/requirements.txt
@@ -4,4 +4,4 @@ pandas==0.25.3
 tables==3.5.1
 statsmodels==0.10.2
 matplotlib==3.1.0
-requests==2.21.0
+requests==2.31.0