diff --git a/Code_Paper_Figures/Supplement/S3_Fit_Algorithm/requirements.txt b/Code_Paper_Figures/Supplement/S3_Fit_Algorithm/requirements.txt
index 26d897a..7b0a9b5 100644
--- a/Code_Paper_Figures/Supplement/S3_Fit_Algorithm/requirements.txt
+++ b/Code_Paper_Figures/Supplement/S3_Fit_Algorithm/requirements.txt
@@ -111,7 +111,7 @@ tqdm==4.23.3
 traitlets==4.3.2
 typing==3.5.2.2
 uncertainties==3.0.2
-urllib3==1.24.2
+urllib3==1.26.5
 virtualenv==15.1.0
 wcwidth==0.1.7
 webencodings==0.5