diff --git a/.travis.yml b/.travis.yml
index fb1cf75..c4298fa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,6 +12,8 @@ jobs:
   include:
     - stage: test
       script:
+        # Travis gets rate limited by Docker HUB.
+        - [[ -n $DOCKER_PASSWORD && -n $DOCKER_USERNAME ]] && echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
         - git ls-files --exclude='*Dockerfile' --ignored | xargs --max-lines=1 -I{} sh -c 'docker run --rm -i -v ${PWD}/.hadolint.yaml:/.hadolint.yaml hadolint/hadolint < "$1"' -- {}
         - bash -c 'shopt -s globstar; shellcheck **/*.sh'