How to upgrade Docker server api version?

Build Environment
1

I’m trying to use this package https://github.com/tonistiigi/buildcache to handle image caching on Ubuntu 14.04 environment.

But running the buildcache program throws an error client is newer than server (client API version: 1.23, server API version: 1.22).

I tried updating Docker to 1.10 following the instructions at Docker 1.10.0 is available (Beta), but it seems the API versions for that are also 1.22.

How do I upgrade the API version to 1.23?

Here’s a snippet of my circle.yml

machine
  environment:
    GODIST: "go1.7.linux-amd64.tar.gz"
  post:
    # update golang to 1.7, required by tonistiigi/buildcache
    - mkdir -p download;
      test -e download/$GODIST || curl -o download/$GODIST https://storage.googleapis.com/golang/$GODIST &&
      sudo rm -rf /usr/local/go &&
      sudo tar -C /usr/local -xzf download/$GODIST;
    - go version
    - docker version

dependencies:
  cache_directories:
    - "~/docker"
  pre:
    - go get github.com/tonistiigi/buildcache/cmd/buildcache
  override:
    - if [ -e ~/docker/latest_image.tar.gz ]; then
        echo "Loading cached latest image...";
        docker load -i docker/latest_image.tar.gz;
      fi
    - if [ -e ~/docker/latest_cache.tar.gz ]; then
        echo "Loading latest cache...";
        docker load -i docker/latest_cache.tar.gz;
      fi
    - docker build --rm=false -t my-image backend/main
    - mkdir -p ~/docker
    - docker save my-image | gzip > ~/docker/latest_image.tar.gz
    - sudo `which buildcache` save -o ~/docker/latest_cache.tar.gz my-image
    - sudo chown $USER ~/docker/latest_cache.tar.gz