Add xenial to 3.7 tests

benmurden · benmurden · commit 1cc6e1263e8b · 2018-11-26T14:43:04.000+09:00
diff --git a/.travis.yml b/.travis.yml
@@ -39,8 +39,10 @@ matrix:
         env: DJANGO=1.11
 
       - python: "3.7"
+        dist: xenial
         env: TOXENV="flake8"
       - python: "3.7"
+        dist: xenial
         env: TOXENV="isort"
 
 install:
