diff --git a/Algorithms/pySINDy/requirements.txt b/Algorithms/pySINDy/requirements.txt
old mode 100755
new mode 100644
index 3621110..a626f6b
--- a/Algorithms/pySINDy/requirements.txt
+++ b/Algorithms/pySINDy/requirements.txt
@@ -72,7 +72,7 @@ testpath==0.4.2
 tornado==5.1.1
 traitlets==4.3.2
 typed-ast==1.1.0
-urllib3==1.24.2
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.4.2