diff --git a/Dockerfile b/Dockerfile
index 2a2c2da..8d49871 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -26,7 +26,7 @@ RUN curl -sSL -o /vbox.dmg http://download.virtualbox.org/virtualbox/$VBOX_VERSI
 
 # Download the Docker parts
 
-ENV DOCKER_VERSION 1.3.3
+ENV DOCKER_VERSION 1.4.0
 RUN curl -sSL -o /docker.tgz https://get.docker.com/builds/Darwin/x86_64/docker-$DOCKER_VERSION.tgz
 
 ENV BOOT2DOCKER_CLI_VERSION ${DOCKER_VERSION}