diff --git a/.travis.yml b/.travis.yml
index b3280b6951b4c49b15a0506f0e98cfb1f2b52e17_LnRyYXZpcy55bWw=..cc028faf06901e3d32c9acbbd96b65756a6d9ca6_LnRyYXZpcy55bWw= 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -66,7 +66,8 @@
     - python: 3.4
     - python: 3.5
     - python: 3.6
-    - python: 3.7-dev
+    - python: 3.7
+      dist: xenial    # required for Python 3.7 (travis-ci/travis-ci#9069)
     - stage: coverage
       if: fork = false OR type != pull_request
       python: 3.6