diff --git a/.travis.yml b/.travis.yml
index 5408b8eb..324e27a6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,6 +22,7 @@ matrix:
     - python: 3.7
       env:
         - TOXENV=cov-py37
+        - JEDI_TEST_ENVIRONMENT=37
     # For now ignore pypy, there are so many issues that we don't really need
     # to run it.
     #- python: pypy