diff --git a/base.yml b/base.yml
old mode 100644
new mode 100755
index 191d80d..fc2a037
--- a/base.yml
+++ b/base.yml
@@ -1,3 +1,4 @@
+#!/usr/bin/env ansible-playbook
 ---
 # Put a common configuration on all servers
 - hosts: all,!unifi
diff --git a/matrix.yml b/matrix.yml
old mode 100644
new mode 100755
index 939486e..634f063
--- a/matrix.yml
+++ b/matrix.yml
@@ -1,3 +1,4 @@
+#!/usr/bin/env ansible-playbook
 ---
 # Install Matrix Synapse on corresponding containers
 - hosts: synapse.adm.auro.re
diff --git a/monitoring.yml b/monitoring.yml
old mode 100644
new mode 100755
index 76e063b..616e380
--- a/monitoring.yml
+++ b/monitoring.yml
@@ -1,3 +1,4 @@
+#!/usr/bin/env ansible-playbook
 ---
 - hosts: prometheus-fleming.adm.auro.re,prometheus-fleming-fo.adm.auro.re
   vars:
diff --git a/network.yml b/network.yml
old mode 100644
new mode 100755
index 9e8980c..a83b2d9
--- a/network.yml
+++ b/network.yml
@@ -1,3 +1,4 @@
+#!/usr/bin/env ansible-playbook
 ---
 # Set up DHCP servers.
 - hosts: dhcp
diff --git a/proxmox.yml b/proxmox.yml
old mode 100644
new mode 100755
index 98af1cc..15b62ca
--- a/proxmox.yml
+++ b/proxmox.yml
@@ -1,3 +1,4 @@
+#!/usr/bin/env ansible-playbook
 ---
 # This is a special playbook to create a new VM !
 - hosts: proxy.adm.auro.re  # Host with python-proxmoxer and python-requests
diff --git a/services_web.yml b/services_web.yml
old mode 100644
new mode 100755
index e6e135f..10f961a
--- a/services_web.yml
+++ b/services_web.yml
@@ -1,3 +1,4 @@
+#!/usr/bin/env ansible-playbook
 ---
 # Deploy Docker hosts
 - hosts: docker-ovh.adm.auro.re
diff --git a/upgrade.yml b/upgrade.yml
old mode 100644
new mode 100755
index 7b28ebe..72cf409
--- a/upgrade.yml
+++ b/upgrade.yml
@@ -1,3 +1,4 @@
+#!/usr/bin/env ansible-playbook
 ---
 # This is a special playbook to upgrade all selected servers !
 # Please always use with --limit myserver.adm.auro.re