Update to 7.2.0. From the changelog:

7.0.0:
Breaking Change:
- approval_utilities is becoming its own pypi package to allow usage in
  production code.

7.1.0:
Command Line Approvals:
- You can now easily verify command line outputs. You can also pass
  inputs into the command line under test, including Iterables. This
  allows you to easily test non-python programs from ApprovalTests.

7.2.0:
- You can invoke a verify() call from the command line. This allows
  invoking python approvals from any other stack via subprocesses.

(schmonz)