diff --git a/.travis.yml b/.travis.yml
index df54168b..a0f41a9a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,25 +6,6 @@
 matrix:
   include:
 
-    # Python 2.7 + QT4
-    - os: linux
-      dist: trusty
-      sudo: required
-      language: generic
-      python: "2.7"
-      env:
-        - QT=4
-      addons:
-        apt:
-          packages:
-            - cmake
-            - python-qt4
-            - pyqt4-dev-tools
-            - xvfb
-      before_install:
-        - sudo pip install lxml
-        - make qt4py2
-        - xvfb-run make testpy2
 
     # Python 2.7 + QT4
     - os: linux
@@ -56,71 +37,6 @@ matrix:
         - make qt4py2
         - xvfb-run make testpy2
 
-    # Python 2 + QT5
-    # disabled; can't get it to work
-    #- os: linux
-    #  dist: trusty
-    #  sudo: required
-    #  language: generic
-    #  python: "2.7"
-    #  env:
-    #    - QT=5
-    #  addons:
-    #    apt:
-    #      packages:
-    #        - cmake
-    #        - pyqt5-dev-tools
-    #        - xvfb
-    #  before_install:
-    #    - sudo apt-get update
-    #    - sudo apt-get install -y python-pip
-    #    - sudo pip install lxml
-    #    - pyrcc5 --help || true  # does QT5 support python2 out of the box?
-    #    - make qt5py3
-    #    - xvfb-run make testpy2
-
-    # Python 3 + QT4
-    - os: linux
-      dist: trusty
-      sudo: required
-      language: generic
-      python: "3.5"
-      env:
-        - QT=4
-      addons:
-        apt:
-          packages:
-            - cmake
-            - python3-pyqt4
-            - pyqt4-dev-tools
-            - xvfb
-      before_install:
-        - sudo apt-get update
-        - sudo apt-get install -y python3-pip
-        - sudo pip3 install lxml
-        - make qt4py3
-        - xvfb-run make testpy3
-
-    # Python 3 + QT5
-    - os: linux
-      dist: trusty
-      sudo: required
-      language: generic
-      python: "3.5"
-      env:
-        - QT=5
-      addons:
-        apt:
-          packages:
-            - cmake
-            - pyqt5-dev-tools
-            - xvfb
-      before_install:
-        - sudo apt-get update
-        - sudo apt-get install -y python3-pip
-        - sudo pip3 install lxml
-        - make qt5py3
-        - xvfb-run make testpy3
 
     # Python 3 + QT5
     - os: linux
@@ -149,76 +65,6 @@ matrix:
         - conda install -y lxml
         - make qt5py3
         - xvfb-run make testpy3
-    # XXX: building QT4 from source takes forever...
-
-    # OS X 10.11 Python 2 + QT4
-    #- os: osx
-    #  osx_image: xcode7.3  # OS X 10.11
-    #  sudo: required
-    #  language: generic
-    #  python: "2.7"
-    #  env:
-    #    - QT=4
-    #  before_install:
-    #    - brew install libxml2
-    #    # build PyQT4...
-    #    - curl -L -O https://sourceforge.net/projects/pyqt/files/sip/sip-4.19/sip-4.19.tar.gz
-    #    - tar zxvf sip-4.19.tar.gz
-    #    - (cd sip-4.19 && python configure.py -d /Library/Python/2.7/site-packages --arch x86_64 && make && sudo make install)
-    #    # NOTE: produces insane amounts of output...
-    #    - brew install -v cartr/qt4/qt --with-qt3support --without-webkit | sed -e's/ .* / ... /'
-    #    - brew linkapps qt
-    #    - curl -L -O http://sourceforge.net/projects/pyqt/files/PyQt4/PyQt-4.12/PyQt4_gpl_mac-4.12.tar.gz
-    #    - tar zxvf PyQt4_gpl_mac-4.12.tar.gz
-    #    - cd PyQt4_gpl_mac-4.12
-    #    - python configure.py --help
-    #    - python configure.py -d /Library/Python/2.7/site-packages --use-arch=x86_64 --confirm-license
-    #    - make
-    #    - sudo make install
-    #    - cd -
-    #    - which python pip
-    #    - python --version
-    #    - sudo -H easy_install-2.7 lxml || true
-    #    - python -c 'import sys; print(sys.path)'
-    #    - python -c 'import lxml'
-    #    - make qt4py2
-    #    - python -c 'help("modules")'
-    #    - make testpy2
-
-    # OS X 10.11 Python 3 + QT4
-    #- os: osx
-    #  osx_image: xcode7.3  # OS X 10.11
-    #  sudo: required
-    #  language: generic
-    #  python: "3.6"
-    #  env:
-    #    - QT=4
-    #  before_install:
-    #    - brew install libxml2
-    #    - brew install python3
-    #    - which python pip python3 pip3 || true
-    #    - curl -L -O https://sourceforge.net/projects/pyqt/files/sip/sip-4.19/sip-4.19.tar.gz
-    #    - tar zxvf sip-4.19.tar.gz
-    #    - ( cd sip-4.19 && python3 configure.py -d /Library/Python/3.6/site-packages --arch x86_64 && make && sudo make install )
-    #    # NOTE: produces insane amounts of output...
-    #    - brew install -v cartr/qt4/qt --with-qt3support --without-webkit | sed -e's/ .* / ... /'
-    #    - brew linkapps qt
-    #    - curl -L -O http://sourceforge.net/projects/pyqt/files/PyQt4/PyQt-4.12/PyQt4_gpl_mac-4.12.tar.gz
-    #    - tar zxvf PyQt4_gpl_mac-4.12.tar.gz
-    #    - cd PyQt4_gpl_mac-4.12
-    #    - python3 configure.py --help
-    #    - python3 configure.py -d /Library/Python/3.6/site-packages --use-arch=x86_64 --confirm-license
-    #    - make
-    #    - sudo make install
-    #    - cd -
-    #    - which python3 pip3
-    #    - python3 --version
-    #    - sudo -H easy_install-3.6 lxml || true
-    #    - python3 -c 'import sys; print(sys.path)'
-    #    - python3 -c 'import lxml'
-    #    - make qt4py3
-    #    - python3 -c 'help("modules")'
-    #    - make testpy3
 
 script:
   - exit 0