1 files changed, 1 insertions, 0 deletions

diff --git a/.travis.yml b/.travis.yml
index 5e2dd0c..9994cd6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,5 @@
 language: python
+dist: bionic
 matrix:
   include:
     - python: 3.5