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..4fbdf13
--- a/datacamp-notebooks/forecast-delivery-time/requirements.txt
+++ b/datacamp-notebooks/forecast-delivery-time/requirements.txt
@@ -5,7 +5,7 @@ numpy==1.15.0
 pandas==0.23.4
 pprint==0.1
 pymongo==3.7.1
-requests==2.19.1
+requests==2.20.0
 scikit-learn==0.19.2
 scipy==1.1.0
 tqdm==4.24.0
\ No newline at end of file