diff --git a/datacamp-notebooks/forecast-delivery-time/requirements.txt b/datacamp-notebooks/forecast-delivery-time/requirements.txt
old mode 100755
new mode 100644
index fbfa5a0..1ab1f31
--- a/datacamp-notebooks/forecast-delivery-time/requirements.txt
+++ b/datacamp-notebooks/forecast-delivery-time/requirements.txt
@@ -1,7 +1,7 @@
 Flask==1.0.2
 googlemaps==3.0.2
 gunicorn==19.9.0
-numpy==1.15.0
+numpy==1.22.0
 pandas==0.23.4
 pprint==0.1
 pymongo==3.7.1