diff --git a/books/zero_to_deep_learning/requirements.txt b/books/zero_to_deep_learning/requirements.txt
old mode 100755
new mode 100644
index b5ad23a..3271d00
--- a/books/zero_to_deep_learning/requirements.txt
+++ b/books/zero_to_deep_learning/requirements.txt
@@ -40,7 +40,7 @@ more-itertools==4.2.0
 nbconvert==5.3.1
 nbformat==4.4.0
 notebook==5.7.8
-numpy==1.14.5
+numpy==1.22.0
 pandas==0.23.3
 pandocfilters==1.4.2
 parso==0.3.1