diff --git a/.travis.yml b/.travis.yml
index 08cdaed..db81059 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,7 +15,7 @@ install:
   - mkdir -p ../qt5
   - if [ ! -d ../qt5/.git ] ; then rm ../qt5 -Rf ; git clone --branch=5.10 git://code.qt.io/qt/qt5.git ../qt5 ; fi
   - pushd ../qt5
-  - if [ ! -d qtbase/.git ] ; then perl init-repository --module-subset=qtbase,qtimageformats,qtmultimedia,qttools ; fi
+  - if [ ! -d qtbase/.git ] ; then perl init-repository --module-subset=qtbase,qtimageformats,qtmultimedia,qtserialport,qttools ; fi
   - if [ ! -f config.summary ] ; then ./configure -prefix `pwd`/build -opensource -confirm-license -nomake examples -nomake tests ; fi
   - if [ ! -d build ] ; then make -j2 > /dev/null && make install ; fi
   - popd