diff --git a/Algorithms/pySINDy/requirements.txt b/Algorithms/pySINDy/requirements.txt
old mode 100755
new mode 100644
index 3621110..cb45a0f
--- a/Algorithms/pySINDy/requirements.txt
+++ b/Algorithms/pySINDy/requirements.txt
@@ -6,7 +6,7 @@ attrs==18.2.0
 Babel==2.6.0
 backcall==0.1.0
 bleach==3.0.2
-certifi==2018.11.29
+certifi==2022.12.7
 chardet==3.0.4
 coverage==4.5.2
 coveralls==1.5.1