diff --git a/README.md b/README.md
index 9a49840..8f33546 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,8 @@ Docker Compose installation options.
     docker_apt_arch: amd64
     docker_apt_repository: "deb [arch={{ docker_apt_arch }}] https://download.docker.com/linux/{{ ansible_distribution|lower }} {{ ansible_distribution_release }} {{ docker_apt_release_channel }}"
     docker_apt_ignore_key_error: True
+    docker_apt_key_url: "https://download.docker.com/linux/ubuntu/gpg"
+    docker_apt_key_id: "9DC858229FC7DD38854AE2D88D81803C0EBFCD88"
 
 (Used only for Debian/Ubuntu.) You can switch the channel to `edge` if you want to use the Edge release.
 
diff --git a/defaults/main.yml b/defaults/main.yml
index 2bcb620..7381376 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -19,6 +19,8 @@ docker_apt_release_channel: stable
 docker_apt_arch: amd64
 docker_apt_repository: "deb [arch={{ docker_apt_arch }}] https://download.docker.com/linux/{{ ansible_distribution|lower }} {{ ansible_distribution_release }} {{ docker_apt_release_channel }}"
 docker_apt_ignore_key_error: true
+docker_apt_key_url: "https://download.docker.com/linux/ubuntu/gpg"
+docker_apt_key_id: "9DC858229FC7DD38854AE2D88D81803C0EBFCD88"
 
 # Used only for RedHat/CentOS/Fedora.
 docker_yum_repo_url: https://download.docker.com/linux/{{ (ansible_distribution == "Fedora") | ternary("fedora","centos") }}/docker-{{ docker_edition }}.repo
diff --git a/tasks/setup-Debian.yml b/tasks/setup-Debian.yml
index 23a49ae..e81d1ab 100644
--- a/tasks/setup-Debian.yml
+++ b/tasks/setup-Debian.yml
@@ -15,8 +15,8 @@
 
 - name: Add Docker apt key.
   apt_key:
-    url: https://download.docker.com/linux/ubuntu/gpg
-    id: 9DC858229FC7DD38854AE2D88D81803C0EBFCD88
+    url: "{{ docker_apt_key_url }}"
+    id: "{{ docker_apt_key_id }}"
     state: present
   register: add_repository_key
   ignore_errors: "{{ docker_apt_ignore_key_error }}"