diff --git a/index.md b/index.md
index fe52db5..a1a3a0f 100644
--- a/index.md
+++ b/index.md
@@ -16,6 +16,7 @@ Setup [Grafana](https://grafana.com) observability platform.
   * [grafana_cache_provider](#grafana_cache_provider)
   * [grafana_cache_provider_config](#grafana_cache_provider_config)
   * [grafana_data_dir](#grafana_data_dir)
+  * [grafana_datasource_files](#grafana_datasource_files)
   * [grafana_db_name](#grafana_db_name)
   * [grafana_db_password](#grafana_db_password)
   * [grafana_db_port](#grafana_db_port)
@@ -112,6 +113,15 @@ grafana_cache_provider_config: _unset_
 grafana_data_dir: /var/lib/grafana
 ```
 
+### grafana_datasource_files
+
+#### Default value
+
+```YAML
+grafana_datasource_files:
+  - grafana/datasources/*.yml.j2
+```
+
 ### grafana_db_name
 
 #### Default value