diff --git a/.travis.yml b/.travis.yml
index fbceabb..59faea6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,7 +13,7 @@ matrix:
             addons:
               apt:
                 sources:
-                  - sourceline: 'deb http://ppa.launchpad.net/deadsnakes/ppa/ubuntu xenial main'
+                  - sourceline: 'ppa:deadsnakes/ppa'
                 packages:
                   - python3.7-dev
 install: pip install tox