diff --git a/README.md b/README.md
index b47f8ab..5413d13 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,20 @@
 # ansible-playbooks
 
-Ansible playbooks to manage the IT infrastructure
\ No newline at end of file
+Ansible playbooks to manage the IT infrastructure.
+
+## Configure hosts
+
+Make sure to define the hosts in `/etc/ansible/hosts`:
+
+```sh
+[serversgroup]
+<hostname or IP address> ansible_user=ansible
+```
+
+## Run playbooks
+
+The `ssh` credentials can be specified interactively:
+
+```sh
+ansible-playbook <playbook>.yml -k
+```
\ No newline at end of file
diff --git a/update.yml b/update.yml
new file mode 100644
index 0000000..14bd486
--- /dev/null
+++ b/update.yml
@@ -0,0 +1,7 @@
+- hosts: dnfservers
+   tasks:
+   - name: Upgrade apt packages
+      become: yes
+      apt:
+         upgrade: "dist"
+         update_cache: yes