diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
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index 0000000..2f7ea2f
--- /dev/null
+++ b/.github/CODEOWNERS
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+# CODEOWNERS — required reviewers for this repository.
+#
+# The org ruleset on `main` requires an approving review from a code owner.
+# Listed accounts must have write access or GitHub silently ignores them.
+# An approval from ANY one listed owner satisfies the requirement, and an
+# author cannot approve their own pull request.
+
+*                       @oscar-opacity @adrianopacity