Repository administrators can enforce required reviews so that pull requests must have a specific number of approving reviews before they are merged.

Note: Before enabling required reviews on a branch, you must first set the branch up as a protected branch. For more information, see "Configuring protected branches."

You can automatically enforce protected branch settings for some or all branches in your repository. For more information, see "Configuring protected branches."

  1. On GitHub, navigate to the main page of the repository.

  2. Under your repository name, click Settings. Repository settings button

  3. In the left menu, click Branches. Repository options sub-menu

  4. Under Protected Branches, select the branch you want to restrict using the drop-down menu. Selecting a protected branch drop-down menu

  5. Select Require pull request reviews before merging. Pull request review restriction checkbox

  6. In the Required approving reviews drop-down menu, select the number of approving reviews you'd like to require on the branch. Drop-down menu to select number of required review approvals

  7. Optionally, select Dismiss stale pull request approvals when new commits are pushed. This dismisses a pull request approval review when a code-modifying commit is pushed to the branch. Dismiss stale pull request approvals when new commits are pushed checkbox
  8. Optionally, select Require review from Code Owners to require review from a code owner when the pull request affects code that has a designated owner. For more information, see "About CODEOWNERS." Require review from code owners
  9. Optionally, if the repository is part of an organization, select Restrict who can dismiss pull request reviews to search for and select the people or teams who can dismiss pull request reviews. For more information, see "Dismissing a pull request review." This option is not available for personal repositories. Restrict who can dismiss pull request reviews checkbox
  10. Optionally, select Include administrators. This enforces the required status checks on the repository administrators. Include administrators checkbox

  11. Click Save changes.

Further reading