diff --git a/.travis.yml b/.travis.yml
index bf2c0c2..336625a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,7 +8,7 @@ before_install:
   - pip -q install -U docker-compose
 
 simulator: &simulator
-  - stage: simulator
+    stage: simulator
     install:
       - docker-compose -f docker/docker-compose.yml pull
       - docker-compose -f docker/docker-compose.yml build