diff --git a/.travis.yml b/.travis.yml
index 970a949..205fefb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,6 +20,7 @@ after_script:
 after_success:
 - if [[ "$TRAVIS_BRANCH" == "master" ]];
   then
+  docker images ;
   docker login -u $DOCKER_USERNAME -p $DOCKER_PASSWORD ;
   docker push gjacquenot/openstreetmap-tile-server ;
   fi