diff --git a/.travis.yml b/.travis.yml
index f20136b..0a8d357 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,10 +10,12 @@ php:
     - "7.4"
     - "nightly"
 
-matrix:
+jobs:
     allow_failures:
         -   php: "nightly"
 
+os: linux
+
 before_install:
     #- echo "memory_limit=4096M" >> ~/.phpenv/versions/$(phpenv version-name)/etc/conf.d/travis.ini