diff --git a/scripts/hooks/config-protection.js b/scripts/hooks/config-protection.js
index f09989985..9250ee5b8 100644
--- a/scripts/hooks/config-protection.js
+++ b/scripts/hooks/config-protection.js
@@ -67,10 +67,15 @@ const PROTECTED_FILES = new Set([
   'stylelint.config.js',
   'stylelint.config.cjs',
   'stylelint.config.mjs',
+  'stylelint.config.ts',
+  'stylelint.config.mts',
+  'stylelint.config.cts',
   '.markdownlint.json',
   '.markdownlint.jsonc',
   '.markdownlint.yaml',
   '.markdownlint.yml',
+  '.markdownlint.cjs',
+  '.markdownlint.mjs',
   '.markdownlintrc',
   // markdownlint-cli2 reads its own config names, not `.markdownlint.*`.
   '.markdownlint-cli2.jsonc',
diff --git a/tests/hooks/config-protection.test.js b/tests/hooks/config-protection.test.js
index dd5eb528b..83c1bd797 100644
--- a/tests/hooks/config-protection.test.js
+++ b/tests/hooks/config-protection.test.js
@@ -374,8 +374,13 @@ function runTests() {
         for (const name of [
           'stylelint.config.js',
           'stylelint.config.mjs',
+          'stylelint.config.ts',
+          'stylelint.config.mts',
+          'stylelint.config.cts',
           '.stylelintrc.js',
           '.markdownlint.jsonc',
+          '.markdownlint.cjs',
+          '.markdownlint.mjs',
           '.markdownlint-cli2.jsonc'
         ]) {
           const absPath = path.join(tmpDir, name);