diff --git a/docs/configuration.md b/docs/configuration.md
index 21a32807..0ad30a00 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -32,11 +32,16 @@ options listed, see `.env` file for the full list of possible env variables.
 
 ### General options
 
-* `DATABASE_URL`: Configures the database which Part-DB uses. For mysql use a string in the form
-  of `mysql://<USERNAME>:<PASSWORD>@<HOST>:<PORT>/<TABLE_NAME>` here
-  (e.g. `DATABASE_URL=mysql://user:password@127.0.0.1:3306/part-db`). For SQLite use the following format to specify the
+* `DATABASE_URL`: Configures the database which Part-DB uses:
+   * For MySQL (or MariaDB) use a string in the form of `mysql://<USERNAME>:<PASSWORD>@<HOST>:<PORT>/<TABLE_NAME>` here
+  (e.g. `DATABASE_URL=mysql://user:password@127.0.0.1:3306/part-db`).
+   * For SQLite use the following format to specify the
   absolute path where it should be located `sqlite:///path/part/app.db`. You can use `%kernel.project_dir%` as
   placeholder for the Part-DB root folder (e.g. `sqlite:///%kernel.project_dir%/var/app.db`)
+   * For Postgresql use a string in the form of `DATABASE_URL=postgresql://user:password@127.0.0.1:5432/part-db?serverVersion=x.y`.
+
+     Please note that **`serverVersion=x.y`** variable is required due to dependency of Symfony framework.
+
 * `DATABASE_MYSQL_USE_SSL_CA`: If this value is set to `1` or `true` and a MySQL connection is used, then the connection
  is encrypted by SSL/TLS and the server certificate is verified against the system CA certificates or the CA certificate
 bundled with Part-DB. Set `DATABASE_MYSQL_SSL_VERIFY_CERT` if you want to accept all certificates.