install libudev

diff --git a/.travis.yml b/.travis.yml
index 45011f66547216e839a1ed67ebcfe83d869f14cf..14a1017b49b478a34f74151726a2dbe633bf6dab 100755 (executable)
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,7 +16,7 @@ deploy:
       tags: true
 
 install:
-  - sudo apt-get install libusb-1.0
+  - sudo apt-get install libudev-dev libusb-1.0
   - pip install -r requirements.txt
   - pip install --force-reinstall pylint==1.9.2
   - pip install circuitpython-build-tools Sphinx sphinx-rtd-theme