diff --git a/defaults/main.yml b/defaults/main.yml
index 2ae2344..582f124 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,5 +1,5 @@
 ---
-marathon_playbook_version: "0.3.2"
+marathon_playbook_version: "0.3.3"
 marathon_version: "0.8.1"
 
 # Debian: Mesosphere apt repository URL
diff --git a/vars/RedHat.yml b/vars/RedHat.yml
index 33fa9b5..29b6c70 100644
--- a/vars/RedHat.yml
+++ b/vars/RedHat.yml
@@ -1,5 +1,4 @@
-os_version: "{{ ansible_lsb.release if ansible_lsb is defined else ansible_distribution_version }}"
-os_version_major: "{{ os_version | regex_replace('^([0-9]+)[^0-9]*.*', '\\\\1') }}"
+os_version_major: "{{ ansible_distribution_major_version }}"
 
 mesosphere_releases:
   '6': 'mesosphere-el-repo-6-3.noarch.rpm'