diff --git a/engine/installation/linux/centos.md b/engine/installation/linux/centos.md
index eb932b2460..666ba5f2f4 100644
--- a/engine/installation/linux/centos.md
+++ b/engine/installation/linux/centos.md
@@ -96,7 +96,14 @@ Repository set-up instructions are different for [Docker CE](#docker-ce) and
     $ sudo yum install -y yum-utils device-mapper-persistent-data lvm2
     ```
 
-2.  Use the following command to set up the **stable** repository. You always
+2.  Enable the `extras` CentOS repository. This ensures access to the
+    `container-selinux` package which is required by `docker-ce`.
+
+    ```bash
+    $ sudo yum-config-manager --enable extras
+    ```
+
+3.  Use the following command to set up the **stable** repository. You always
     need the **stable** repository, even if you want to install **edge** builds
     as well.
 
@@ -106,7 +113,7 @@ Repository set-up instructions are different for [Docker CE](#docker-ce) and
         {{ download-url-base }}/docker-ce.repo
     ```
 
-3.  **Optional**: Enable the **edge** repository. This repository is included
+4.  **Optional**: Enable the **edge** repository. This repository is included
     in the `docker.repo` file above but is disabled by default. You can enable
     it alongside the stable repository.
 
@@ -136,7 +143,14 @@ Repository set-up instructions are different for [Docker CE](#docker-ce) and
     $ sudo sh -c 'echo "<DOCKER-EE-URL>" > /etc/yum/vars/dockerurl'
     ```
 
-3.  Install required packages. `yum-utils` provides the `yum-config-manager`
+3.  Enable the `extras` CentOS repository. This ensures access to the
+    `container-selinux` package which is required by `docker-ee`.
+
+    ```bash
+    $ sudo yum-config-manager --enable extras
+    ```
+
+4.  Install required packages. `yum-utils` provides the `yum-config-manager`
     utility, and `device-mapper-persistent-data` and `lvm2` are required by the
     `devicemapper` storage driver.
 
@@ -144,7 +158,7 @@ Repository set-up instructions are different for [Docker CE](#docker-ce) and
     $ sudo yum install -y yum-utils device-mapper-persistent-data lvm2
     ```
 
-4.  Use the following command to add the **stable** repository:
+5.  Use the following command to add the **stable** repository:
 
     ```bash
     $ sudo yum-config-manager \
diff --git a/engine/installation/linux/rhel.md b/engine/installation/linux/rhel.md
index 682b365c9f..f60d39e62a 100644
--- a/engine/installation/linux/rhel.md
+++ b/engine/installation/linux/rhel.md
@@ -114,7 +114,31 @@ the repository.
     $ sudo yum install -y yum-utils device-mapper-persistent-data lvm2
     ```
 
-4.  Use the following command to add the **stable** repository:
+4.  Enable the `extras` RHEL repository. This ensures access to the
+    `container-selinux` package which is required by `docker-ee`.
+
+    ```bash
+    $ sudo yum-config-manager --enable rhel-7-server-extras-rpms
+    ```
+
+    Depending on cloud provider, you may also need to enable another repository.
+
+    For AWS:
+
+    ```bash
+    $ sudo yum-config-manager --enable rhui-REGION-rhel-server-extras
+    ```
+
+    > **Note**: `REGION` here is literal, and does *not* represent the region
+    > your machine is running in.
+
+    For Azure:
+
+    ```bash
+    $ sudo yum-config-manager --enable rhui-rhel-7-server-rhui-extras-rpms
+    ```
+
+5.  Use the following command to add the **stable** repository:
 
     ```bash
     $ sudo yum-config-manager \
@@ -218,14 +242,14 @@ If you cannot use the official Docker repository to install Docker, you can
 download the `.rpm` file for your release and install it manually. You will
 need to download a new file each time you want to upgrade Docker.
 
-1. Go to the Docker EE repository URL associated with your
-   trial or subscription in your browser. Go to
-   `7/x86_64/stable-{{ minor-version }}/Packages` and download the `.rpm` file
-   for the Docker version you want to install.
+1.  Go to the Docker EE repository URL associated with your
+    trial or subscription in your browser. Go to
+    `7/x86_64/stable-{{ minor-version }}/Packages` and download the `.rpm` file
+    for the Docker version you want to install.
 
-   > **Note**: If you have trouble with `selinux` using the packages under the
-   > `7` directory, try choosing the version-specific directory instead, such
-   > as `7.3`.
+    > **Note**: If you have trouble with `selinux` using the packages under the
+    > `7` directory, try choosing the version-specific directory instead, such
+    > as `7.3`.
 
 2.  Install Docker EE, changing the path below to the path where you downloaded
     the Docker package.