diff --git a/README.md b/README.md
index ab5fba9..84b5a13 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,26 @@ Works great with [BorgBase.com](https://www.borgbase.com) - Simple and Secure Ho
       keep_monthly: 6
 ```
 
+## Example playbook with custom configuration options (borgmatic 1.8+)
 
+**Note:** `borgmatic_custom_config` requires borgmatic 1.8.0 or later.
+
+```
+- hosts: all
+  roles:
+  - role: borgbase.ansible_role_borgbackup
+    borg_encryption_passphrase: CHANGEME
+    borg_repository: ssh://xxxxxx@xxxxxx.repo.borgbase.com/./repo
+    borg_source_directories:
+      - /var/www
+    borgmatic_custom_config:
+      uptime_kuma:
+        push_url: https://uptime.kuma.example.com/abcd1234
+      ntfy:
+        topic: backups
+        server: https://ntfy.sh
+      output_verbosity: 1
+```
 
 ## Installation
 
@@ -121,6 +140,7 @@ $ git clone https://github.com/borgbase/ansible-role-borgbackup.git roles/ansibl
 - `borgmatic_store_atime`: Store atime into archive. Defaults to `true`
 - `borgmatic_store_ctime`: Store ctime into archive. Defaults to `true`
 - `borgmatic_version`: Force a specific borgmatic version to be installed
+- `borgmatic_custom_config`: Custom YAML configuration (as a dictionary) to add to the borgmatic config file. Allows adding any additional borgmatic options not covered by other variables. **Requires borgmatic 1.8.0 or later.** See example above.
 
 - `borg_user`: Name of the User to create Backups (service account)
 - `borg_group`: Name of the Group to create Backups (service account)
diff --git a/defaults/main.yml b/defaults/main.yml
index 4d928a4..33eb5f2 100755
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -46,6 +46,7 @@ borgmatic_store_ctime: true
 borgmatic_relocated_repo_access_is_ok: false
 borgmatic_unknown_unencrypted_repo_access_is_ok: false
 borgmatic_version: ">=1.7.11"
+borgmatic_custom_config: {}
 
 borg_venv_path: "/opt/borgmatic"
 borg_user: "root"
diff --git a/meta/argument_specs.yml b/meta/argument_specs.yml
index eaa99f5..6851fc5 100644
--- a/meta/argument_specs.yml
+++ b/meta/argument_specs.yml
@@ -211,6 +211,10 @@ argument_specs:
         type: str
         required: false
         description: Borgmatic version to install. Defaults to 'latest'
+      borgmatic_custom_config:
+        type: dict
+        required: false
+        description: Custom YAML configuration to add to the borgmatic config file. Allows adding any additional borgmatic options not covered by other variables. Requires borgmatic 1.8.0 or later.
       borg_ssh_key_type:
         type: str
         required: false
diff --git a/tasks/05_configure.yml b/tasks/05_configure.yml
index d4a6254..b90b165 100644
--- a/tasks/05_configure.yml
+++ b/tasks/05_configure.yml
@@ -12,6 +12,12 @@
       ansible.builtin.set_fact:
         borgmatic_version: "{{ borgmatic_version_output.stdout.split()[0] }}"
 
+    - name: Ensure custom config is only used with borgmatic 1.8+
+      ansible.builtin.assert:
+        that:
+          - borgmatic_custom_config is not defined or borgmatic_custom_config | length == 0 or borgmatic_version is version('1.8.0', '>=')
+        msg: "borgmatic_custom_config requires borgmatic 1.8.0 or later. Detected version: {{ borgmatic_version }}"
+
     - name: Ensure /etc/borgmatic exists
       ansible.builtin.file:
         path: /etc/borgmatic
diff --git a/templates/config.yaml.j2 b/templates/config.yaml.j2
index 65f96aa..d15e6d8 100644
--- a/templates/config.yaml.j2
+++ b/templates/config.yaml.j2
@@ -197,3 +197,9 @@ check_last: {{ borgmatic_check_last }}
 {{ hook }}:
 {{ borgmatic_hooks[hook] | to_nice_yaml(indent=4) | indent(4, first=true) }}
 {% endfor %}
+
+{% if borgmatic_custom_config is defined and borgmatic_custom_config %}
+# Custom configuration
+{{ borgmatic_custom_config | to_nice_yaml(indent=4) }}
+{% endif %}
+