diff --git a/EBooks/Python-Data-Science-Handbook/requirements.txt b/EBooks/Python-Data-Science-Handbook/requirements.txt
old mode 100755
new mode 100644
index 22568f1d8..33c27ffe6
--- a/EBooks/Python-Data-Science-Handbook/requirements.txt
+++ b/EBooks/Python-Data-Science-Handbook/requirements.txt
@@ -1,4 +1,4 @@
-numpy==1.11.1
+numpy==1.22.0
 pandas==0.18.1
 scipy==0.17.1
 scikit-learn==0.17.1