diff --git a/.travis.yml b/.travis.yml
index e3b4894..141398b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ git:
   submodules: false
 sudo: required
 dist: trusty
+group: deprecated-2017Q4
 cache:
   timeout: 1200
   directories: