diff --git a/scripts/install_software.sh b/scripts/install_software.sh
index 1891ff8..8a1ecf7 100644
--- a/scripts/install_software.sh
+++ b/scripts/install_software.sh
@@ -41,6 +41,7 @@ echo "--- Downloading PX4 and installing its dependencies"
 # v1.10.1:
 git clone -b v1.10.1-clover https://github.com/CopterExpress/Firmware ${HOME}/Firmware
 sudo -E sh -c 'apt-get update; apt-get install -y python3-pip'
+sudo -E sh -c 'apt-get update; apt-get install -y gazebo9'
 sudo -E -S sh -c '${HOME}/Firmware/Tools/setup/ubuntu.sh'
 sudo -E -S sh -c 'echo "2" | update-alternatives --config java'
 sudo -E -S sed -i -e '/^assistive_technologies=/s/^/#/' /etc/java-*-openjdk/accessibility.properties