diff --git a/Challenges/challenge_12_the_start_of_something_big/GregHilston/requirements.txt b/Challenges/challenge_12_the_start_of_something_big/GregHilston/requirements.txt
index cfba477..a05865b 100644
--- a/Challenges/challenge_12_the_start_of_something_big/GregHilston/requirements.txt
+++ b/Challenges/challenge_12_the_start_of_something_big/GregHilston/requirements.txt
@@ -25,7 +25,7 @@ mistune==0.8.4
 nbconvert==5.4.0
 nbformat==4.4.0
 notebook==5.7.0
-numpy==1.15.4
+numpy==1.22.0
 pandas==0.23.4
 pandocfilters==1.4.2
 parso==0.3.1