docs: update docs on --exclude-deps

README.md

@@ -86,6 +86,12 @@ When using `requirements.txt` files to specify dependencies, there is no way to
 
 Yes, you can specify a list of sections after the `--sections` argument. It all depends on what your setup looks like and what you set out to achieve.
 
+### Can I exclude dependencies from the scan?
+
+Yes, you can use the `--exclude-deps` argument to specify one or more dependencies you do not wish to get warnings for.
+
+This feature meant to be used for dependencies you must specify in your dependencies spec file, but which you don't necessarily import in your source code. An example of such a dependency are database drivers, which are commonly only defined in connection strings and will signal to the ORM which driver to use.
+
 ### Can I run Creosote in a GitHub Action workflow?
 
 Yes, please see the `action` job example in [`.github/workflows/test.yml`](.github/workflows/test.yml).