diff --git a/.travis.yml b/.travis.yml
index 2ee0b35..28b7a82 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,8 @@ os:
   - linux
   - osx
 
+dist: xenial
+
 env:
   - TEST_SHELLS=bash
   - TEST_SHELLS=zsh