diff --git a/.travis.yml b/.travis.yml
index 0508c38..2afa0a3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,8 @@
-sudo: required
 services:
   - docker
 language: cpp
+os:
+  - linux
 dist: bionic
 arch:
   - s390x