diff --git a/Tools/scripts/install-prereqs-mac.sh b/Tools/scripts/install-prereqs-mac.sh
index fadd48ac81..4f6993993c 100755
--- a/Tools/scripts/install-prereqs-mac.sh
+++ b/Tools/scripts/install-prereqs-mac.sh
@@ -26,7 +26,7 @@ else
     echo "pip installed"
 fi
 
-sudo pip2 install pyserial future empy
+sudo pip2 install pyserial future empy mavproxy
 
 SCRIPT_DIR=$(dirname $(realpath ${BASH_SOURCE[0]}))
 ARDUPILOT_ROOT=$(realpath "$SCRIPT_DIR/../../")