diff --git a/.travis.yml b/.travis.yml
index de08a728..0452b44b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -40,6 +40,7 @@ jobs:
         - php ocular.phar code-coverage:upload --format=php-clover tests/coverage-clover.xml
 
     - stage: API documentation
+      php: 7.1
       before_script:
       - curl -O http://get.sensiolabs.org/sami.phar
       script: