diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 3a6f76b9..129a78fa 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -1,3 +1,7 @@
+# Specification files for platform maintainers
 cibuildwheel/platforms/ios.py         @freakboy3742
 cibuildwheel/platforms/pyodide.py     @hoodmane @ryanking13 @agriyakhetarpal
 cibuildwheel/platforms/android.py     @mhsmith
+
+# Constraints files
+cibuildwheel/resources/constraints-pyodide*.txt @hoodmane @ryanking13 @agriyakhetarpal