diff --git a/.github/ISSUE_TEMPLATE/config.yml b/.github/ISSUE_TEMPLATE/config.yml
index 3ba13e0..bd9dfe4 100644
--- a/.github/ISSUE_TEMPLATE/config.yml
+++ b/.github/ISSUE_TEMPLATE/config.yml
@@ -1 +1,2 @@
+---
 blank_issues_enabled: false
diff --git a/.github/auto_assign.yml b/.github/auto_assign.yml
index 9884624..f74e3a8 100644
--- a/.github/auto_assign.yml
+++ b/.github/auto_assign.yml
@@ -1,3 +1,4 @@
+---
 # Set to true to add reviewers to pull requests
 addReviewers: true
 
diff --git a/.github/stale.yml b/.github/stale.yml
index d47cfd2..c765ed1 100644
--- a/.github/stale.yml
+++ b/.github/stale.yml
@@ -1,3 +1,4 @@
+---
 issues:
   # Number of days of inactivity before an issue becomes stale
   daysUntilStale: 90
diff --git a/.travis.yml b/.travis.yml
index 5cb54c6..6522ad7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 ---
 dist: xenial
 language: python
-python: "3.7"
+python: "3.9"
 os: linux
 services:
   - docker
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1423ba..9804457 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,8 @@ All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/) and [Keep a changelog](https://github.com/olivierlacan/keep-a-changelog).
 
 ## Unreleased
-
+### Changed
+- *[#73](https://github.com/idealista/cookiecutter-ansible-role/issues/73) Add document start to .yml files* @blalop
 
 ## [2.6.0](https://github.com/idealista/cookiecutter-ansible-role/tree/2.6.0)
 ### [Full Changelog](https://github.com/idealista/cookiecutter-ansible-role/compare/2.5.1...2.6.0)
diff --git a/{{cookiecutter.app_name}}_role/.github/ISSUE_TEMPLATE/config.yml b/{{cookiecutter.app_name}}_role/.github/ISSUE_TEMPLATE/config.yml
index 3ba13e0..f3aad96 100644
--- a/{{cookiecutter.app_name}}_role/.github/ISSUE_TEMPLATE/config.yml
+++ b/{{cookiecutter.app_name}}_role/.github/ISSUE_TEMPLATE/config.yml
@@ -1 +1,3 @@
+---
+
 blank_issues_enabled: false
diff --git a/{{cookiecutter.app_name}}_role/.github/stale.yml b/{{cookiecutter.app_name}}_role/.github/stale.yml
index d47cfd2..c765ed1 100644
--- a/{{cookiecutter.app_name}}_role/.github/stale.yml
+++ b/{{cookiecutter.app_name}}_role/.github/stale.yml
@@ -1,3 +1,4 @@
+---
 issues:
   # Number of days of inactivity before an issue becomes stale
   daysUntilStale: 90
diff --git a/{{cookiecutter.app_name}}_role/defaults/main.yml b/{{cookiecutter.app_name}}_role/defaults/main.yml
index 13f9995..cc74a3d 100644
--- a/{{cookiecutter.app_name}}_role/defaults/main.yml
+++ b/{{cookiecutter.app_name}}_role/defaults/main.yml
@@ -21,7 +21,7 @@
 # Installation path
 {{ cookiecutter.app_name }}_root_path: /opt/{{ cookiecutter.app_name }}
 {{ cookiecutter.app_name }}_bin_path: "{% raw %}{{{% endraw %} {{ cookiecutter.app_name }}_root_path {% raw %}}}{% endraw %}/bin"
-{{ cookiecutter.app_name }}_skeleton_paths: 
+{{ cookiecutter.app_name }}_skeleton_paths:
   - "{% raw %}{{{% endraw %} {{ cookiecutter.app_name }}_bin_path {% raw %}}}{% endraw %}"
 {{ cookiecutter.app_name }}_exec_name: {{ cookiecutter.exec_name }}
 {% if cookiecutter.has_service  == 'True' %}