diff --git a/Chapter-4/activity_2/requirements.txt b/Chapter-4/activity_2/requirements.txt
index 424e5fb..5c2c9f5 100644
--- a/Chapter-4/activity_2/requirements.txt
+++ b/Chapter-4/activity_2/requirements.txt
@@ -42,7 +42,7 @@ nbconvert==5.3.1
 nbformat==4.4.0
 nose==1.3.7
 notebook==5.2.2
-numpy==1.13.3
+numpy==1.22.0
 pandas==0.21.1
 pandocfilters==1.4.2
 parso==0.1.1