diff --git a/README.md b/README.md
index 008d9dd..0371905 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,10 @@ marathon_version: "1.3.6"
 # Debian: Mesosphere apt repository URL
 marathon_apt_package: "marathon={{ marathon_version }}-*"
 marathon_apt_repo: "deb http://repos.mesosphere.com/{{ansible_distribution|lower}} {{ansible_distribution_release|lower}} main"
+marathon_apt_key_id: 'E56151BF'
+marathon_apt_key_server: 'keyserver.ubuntu.com'
+# undefined if using key server; if set, will override adding key from key_server above
+marathon_apt_key_url:
 # Debian apt pin priority for the marathon package. If empty (the default), no pin priority is used.
 marathon_apt_pin_priority:
 
diff --git a/defaults/main.yml b/defaults/main.yml
index 654095c..f7a9ae5 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -8,6 +8,9 @@ marathon_package_version: "1.0.540"
 marathon_os_distribution: "{{ ansible_distribution | lower }}"
 marathon_os_version: "{{ ansible_distribution_version.split('.') | join('') }}"
 marathon_apt_url: "http://{{ marathon_repo_host }}/{{ ansible_distribution | lower }}"
+marathon_apt_key_id: 'E56151BF'
+marathon_apt_keyserver: 'keyserver.ubuntu.com'
+marathon_apt_key_url: 
 marathon_package_full_version: "{{ marathon_version }}-{{ marathon_package_version }}.{{ marathon_os_distribution }}{{ marathon_os_version }}"
 marathon_apt_package: "marathon={{ marathon_package_full_version }}"
 
diff --git a/tasks/Debian.yml b/tasks/Debian.yml
index a639469..14e4442 100644
--- a/tasks/Debian.yml
+++ b/tasks/Debian.yml
@@ -1,6 +1,21 @@
 ---
-- name: Add apt-key
-  apt_key: id=E56151BF keyserver=keyserver.ubuntu.com state=present
+- name: Add apt-key (keyserver)
+  apt_key: 
+    id: "{{ marathon_apt_key_id }}"
+    keyserver: "{{ marathon_apt_key_server }}"
+    state: present
+  when:
+    - marathon_apt_key_id and marathon_apt_key_server
+    - marathon_apt_key_url is not defined
+
+- name: Add apt-key (url)
+  apt_key: 
+    id: "{{ marathon_apt_key_id }}"
+    url: "{{ marathon_apt_key_url }}"
+    state: present
+  when:
+    - marathon_apt_key_id and marathon_apt_key_url
+    - marathon_apt_key_url is defined
 
 - name: Add Mesosphere repo
   apt_repository: repo='deb {{ marathon_apt_url }} {{ ansible_distribution_release | lower }} main' state=present update_cache=yes