diff --git a/Chapter01/pip-requirements.txt b/Chapter01/pip-requirements.txt
index 9f41dd0..41bb915 100644
--- a/Chapter01/pip-requirements.txt
+++ b/Chapter01/pip-requirements.txt
@@ -67,7 +67,7 @@ nbformat==4.3.0
 ndg-httpsclient==0.4.0
 nltk==3.2.4
 notebook==5.0.0
-numpy==1.13.1
+numpy==1.22.0
 oauthlib==1.0.3
 oneconf==0.3.9
 PAM==0.4.2