diff --git a/ros/README.md b/ros/README.md
index 22105929f..23d5fa15a 100644
--- a/ros/README.md
+++ b/ros/README.md
@@ -40,8 +40,6 @@ WARNING:
 -	[`melodic-ros-base-stretch` (*ros/melodic/debian/stretch/ros-base/Dockerfile*)](https://github.com/osrf/docker_images/blob/49d22242e02e9c541a9e85b657e1785617b6f470/ros/melodic/debian/stretch/ros-base/Dockerfile)
 -	[`melodic-robot-stretch` (*ros/melodic/debian/stretch/robot/Dockerfile*)](https://github.com/osrf/docker_images/blob/49d22242e02e9c541a9e85b657e1785617b6f470/ros/melodic/debian/stretch/robot/Dockerfile)
 -	[`melodic-perception-stretch` (*ros/melodic/debian/stretch/perception/Dockerfile*)](https://github.com/osrf/docker_images/blob/49d22242e02e9c541a9e85b657e1785617b6f470/ros/melodic/debian/stretch/perception/Dockerfile)
--	[`ardent-ros-core`, `ardent-ros-core-xenial` (*ros/ardent/ubuntu/xenial/ros-core/Dockerfile*)](https://github.com/osrf/docker_images/blob/4f09cf3ebe9300879f9a27eca2c60632ff980431/ros/ardent/ubuntu/xenial/ros-core/Dockerfile)
--	[`ardent-ros-base`, `ardent-ros-base-xenial`, `ardent` (*ros/ardent/ubuntu/xenial/ros-base/Dockerfile*)](https://github.com/osrf/docker_images/blob/4f09cf3ebe9300879f9a27eca2c60632ff980431/ros/ardent/ubuntu/xenial/ros-base/Dockerfile)
 -	[`bouncy-ros-core`, `bouncy-ros-core-bionic` (*ros/bouncy/ubuntu/bionic/ros-core/Dockerfile*)](https://github.com/osrf/docker_images/blob/2fc9fc270ce866cd52af11e22c7d3e403efc6c61/ros/bouncy/ubuntu/bionic/ros-core/Dockerfile)
 -	[`bouncy-ros-base`, `bouncy-ros-base-bionic`, `bouncy` (*ros/bouncy/ubuntu/bionic/ros-base/Dockerfile*)](https://github.com/osrf/docker_images/blob/2fc9fc270ce866cd52af11e22c7d3e403efc6c61/ros/bouncy/ubuntu/bionic/ros-base/Dockerfile)
 -	[`crystal-ros-core`, `crystal-ros-core-bionic` (*ros/crystal/ubuntu/bionic/ros-core/Dockerfile*)](https://github.com/osrf/docker_images/blob/bfad8a41952cd552904d4644a1c5c2d22396644d/ros/crystal/ubuntu/bionic/ros-core/Dockerfile)