Package-lock update to deps

website/docs/reference/commands/deps.md

@@ -57,3 +57,31 @@ Installing calogica/[email protected]
 Updates available for packages: ['tailsdotcom/dbt_artifacts', 'dbt-labs/snowplow']
 Update your versions in packages.yml, then run dbt deps
 ```
+
+<VersionBlock firstVersion="1.7">
+
+The first time you run `dbt deps`, dbt will generate the `package-lock.yml` file in the _project_root_ where `packages.yml` is recorded, containing all of the resolved packages. Each Subsequent run will record the packages installed in this file. If the subsequent `dbt deps` runs contain no updated packages in `depenedencies.yml` or `packages.yml`, dbt-core will install from `package-lock.yml`. 
+
+When you update the package spec and run `dbt deps` again, the package-lock and package files will be updated accordingly. You can run `dbt deps --lock` to update the `package-lock.yml` with the most recent dependencies from `packages.
+
+The `--add` flag allows you to add a package to the `packages.yml` with configurable `--version` and `--source` information. The `--dry-run` flag, when set to `False`(default) will re-compile the `package-lock.yml` file after a new package is added to the `packages.yml` file. Set it to `True` and the changes will not persist. 
+
+Examples of the `--add` flag:
+```shell
+# add package from hub (--source arg defaults to "hub")
+dbt deps add --package dbt-labs/dbt_utils --version 1.0.0
+
+# add package from hub with semantic version
+dbt deps add --package dbt-labs/snowplow --version ">=0.7.0,<0.8.0"
+
+# add package from git
+dbt deps add --package https://github.com/fivetran/dbt_amplitude --version v0.3.0 --source git 
+
+# add package from local (--version not required for local)
+dbt deps add --package /opt/dbt/redshift --source local
+
+# add package to packages.yml WITHOUT updating package-lock.yml
+dbt deps add --package dbt-labs/dbt_utils --version 1.0.0 --dry-run True
+
+```
+</VersionBlock>