diff --git a/.travis.yml b/.travis.yml
index df83357b..43b14829 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,6 +16,7 @@ jobs:
     - dist: xenial
     - os: windows
       # if: type = pull_request
+      language: shell
       before_install:
         - choco install python2
         - python -m pip install --upgrade pip