diff --git a/macosx/up.sh b/macosx/up.sh
index 17c35278..24824c0f 100755
--- a/macosx/up.sh
+++ b/macosx/up.sh
@@ -27,6 +27,7 @@ brew install --force gnupg2
 brew install --force dirmngr
 brew install python3
 brew install mercurial
+brew install numpy
 brew upgrade
 brew cask upgrade