Travis: test on Python 3.8-dev

diff --git a/.travis.yml b/.travis.yml
index 9fad4fc30de9a023250d500dbbec06e22bb0a2ce..1749139527e9a929b5073bc8b5a3509ea298f03d 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -34,6 +34,8 @@ matrix:
       python: 3.6
     - os: linux
       python: 3.7
+    - os: linux
+      python: 3.8-dev
 
 install:
   - bash .ci/deps.${TRAVIS_OS_NAME}.sh