How to update peerDependencies of child projects/libraries when upgrading Angular?

Question

I just upgraded a project from Angular 12 to 13. The ng update CLI updated the versions of packages in the package.json at the root of the project.

But the angular packages mentioned in peerDependencies inside package.json of individual libraries inside the projects/ directory are still on Angular 12.

Is there a CLI available to update them automatically to coincide with the versions from the root package.json or do I need to go in each library and update its package.json manually?

Directory structure:

my-project/
|---- projects/
|     |---- my-library1/
|     |      |---- package.json (peerDependencies still on Angular 12)
|     |
|     |---- my-library2/
|           |---- package.json (peerDependencies still on Angular 12)
|
|---- package.json (All dependencies & devDependencies migrated to Angular 13)