diff --git a/defaults/main.yml b/defaults/main.yml
index 05a46f4..1238512 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -19,3 +19,6 @@ ntp_servers:
 # Enable or disable ntp statistics
 # Default is false
 ntp_statistics: false
+
+# version check for this playbook
+submodules_versioncheck: true
diff --git a/tasks/main.yml b/tasks/main.yml
index b656bc1..76217f5 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -1,5 +1,6 @@
 ---
-# Main tasks file for ansible-role-ntp
+- include_tasks: versioncheck.yml
+  when: submodules_versioncheck|bool
 
 - name: Include OS specific variables.
   include_vars: "{{ ansible_os_family }}.yml"
diff --git a/vars/main.yml b/vars/main.yml
index e4e06f2..f4b94e9 100644
--- a/vars/main.yml
+++ b/vars/main.yml
@@ -1,2 +1,3 @@
 ---
-# vars file for ansible-role-ntp
\ No newline at end of file
+playbook_version_number: 100
+playbook_version_path: '/etc/ansible-version/role-ntp_chaos-bodensee_github.com.version'