diff --git a/.travis.yml b/.travis.yml
index c334738f..6b3a6656 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,17 +12,15 @@ python: 3.5
 env:
   - TOX_ENV=py34
   - TOX_ENV=py35
-  - DOCKER_ENGINE_VERSION=17.04.0~ce-0~ubuntu-precise # https://www.ubuntuupdates.org/?type=dists&vals=ubuntu-precise
-  - DOCKER_COMPOSE_VERSION=1.12.0 # https://github.com/docker/compose/releases/
 
 before_install:
   - sudo sh -c 'echo "deb https://apt.dockerproject.org/repo ubuntu-precise main" > /etc/apt/sources.list.d/docker.list'
   - sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
   - sudo apt-get update
   - sudo apt-key update
-  - sudo apt-get --force-yes -qqy -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" install docker-engine=${DOCKER_ENGINE_VERSION}
+  - sudo apt-get --force-yes -qqy -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" install docker-engine=17.04.0~ce-0~ubuntu-precise
   - sudo rm /usr/local/bin/docker-compose
-  - curl -L https://github.com/docker/compose/releases/download/${DOCKER_COMPOSE_VERSION}/docker-compose-`uname -s`-`uname -m` > docker-compose
+  - curl -L https://github.com/docker/compose/releases/download/1.12.0/docker-compose-`uname -s`-`uname -m` > docker-compose
   - chmod +x docker-compose
   - sudo mv docker-compose /usr/local/bin
   - docker -v