1 files changed, 2 insertions, 0 deletions

diff --git a/.travis.yml b/.travis.yml
index cc16829..afdc7c9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,8 @@ r:
   - devel
 addons:
   apt:
+    sourceline:
+      - 'deb http://us.archive.ubuntu.com/ubuntu xenial universe'
     packages:
       - python3-rdkit
 github_packages: