diff --git a/scripts/setup-osx.sh b/scripts/setup-osx.sh
index f731c5d56..06b303bc4 100644
--- a/scripts/setup-osx.sh
+++ b/scripts/setup-osx.sh
@@ -4,4 +4,4 @@ sudo installer -pkg python-${PYTHON}-macosx10.6.pkg -target /
 sudo python3 -m ensurepip --upgrade
 # A manual check that the correct version of Python is running.
 python3 --version
-pip3 install -r requirements.txt
+python3 -m pip install -r requirements.txt