diff --git a/.travis/install.sh b/.travis/install.sh
index 1748ba5b..5b98176e 100755
--- a/.travis/install.sh
+++ b/.travis/install.sh
@@ -13,7 +13,7 @@ elif [[ $TRAVIS_OS_NAME == 'linux' ]]
 then
     sudo apt-get -qy install debhelper cmake qtbase5-dev qtdeclarative5-dev \
         qtquickcontrols2-5-dev libfftw3-dev libsamplerate0-dev portaudio19-dev libmpv-dev librtmidi-dev \
-        doxygen devscripts fakeroot
+        doxygen devscripts fakeroot graphviz
 
     curl -L https://github.com/probonopd/linuxdeployqt/releases/download/continuous/linuxdeployqt-continuous-x86_64.AppImage > linuxdeployqt \
     && chmod +x linuxdeployqt \