diff --git a/files/eslintrc-strict.js b/files/eslintrc-strict.cjs
similarity index 100%
rename from files/eslintrc-strict.js
rename to files/eslintrc-strict.cjs
diff --git a/files/eslintrc-test-strict.js b/files/eslintrc-test-strict.cjs
similarity index 97%
rename from files/eslintrc-test-strict.js
rename to files/eslintrc-test-strict.cjs
index b98fb7d4..da31d212 100644
--- a/files/eslintrc-test-strict.js
+++ b/files/eslintrc-test-strict.cjs
@@ -9,7 +9,7 @@
 // See more at https://github.com/forcedotcom/sfdx-dev-packages/tree/master/packages/dev-scripts
 
 module.exports = {
-  extends: '../.eslintrc.js',
+  extends: '../.eslintrc.cjs',
   // Allow describe and it
   env: { mocha: true },
   rules: {
diff --git a/files/eslintrc-test.js b/files/eslintrc-test.cjs
similarity index 96%
rename from files/eslintrc-test.js
rename to files/eslintrc-test.cjs
index 79fd9f43..fadf2c90 100644
--- a/files/eslintrc-test.js
+++ b/files/eslintrc-test.cjs
@@ -6,7 +6,7 @@
  */
 
 module.exports = {
-  extends: '../.eslintrc.js',
+  extends: '../.eslintrc.cjs',
   // Allow describe and it
   env: { mocha: true },
   rules: {
diff --git a/files/eslintrc.js b/files/eslintrc.cjs
similarity index 100%
rename from files/eslintrc.js
rename to files/eslintrc.cjs
diff --git a/package.json b/package.json
index 1b2bc3a4..53f309a3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@salesforce/dev-scripts",
-  "version": "5.7.0",
+  "version": "5.7.1-qa.0",
   "description": "Standardize package.json scripts and config files for Salesforce projects.",
   "repository": "forcedotcom/dev-scripts",
   "bin": {
@@ -68,4 +68,4 @@
   "publishConfig": {
     "access": "public"
   }
-}
\ No newline at end of file
+}
diff --git a/utils/standardize-files.js b/utils/standardize-files.js
index 6a851f64..b7f7d105 100644
--- a/utils/standardize-files.js
+++ b/utils/standardize-files.js
@@ -92,6 +92,14 @@ function writeMocharcJson(targetDir) {
   return copyFile(mocharcSourcePath, gitignoreTargetPath);
 }
 
+function replaceInFile(filePath, replaceFn) {
+  const contents = readFileSync(filePath, 'utf8');
+  const newContents = replaceFn(contents);
+  if (newContents !== contents) {
+    writeFileSync(filePath, newContents);
+  }
+}
+
 // eslint-disable-next-line complexity
 module.exports = (packageRoot = require('./package-path')) => {
   const config = resolveConfig(packageRoot);
@@ -126,13 +134,31 @@ module.exports = (packageRoot = require('./package-path')) => {
     const lintConfig = config.lint || {};
     const strict = config.strict || lintConfig.strict;
 
-    const eslintSourcePath = join(FILES_PATH, strict ? 'eslintrc-strict.js' : 'eslintrc.js');
-    const eslintTargetPath = join(packageRoot, '.eslintrc.js');
+    const eslintJsTargetPath = join(packageRoot, '.eslintrc.js');
+    // if .eslintrc.js exists, copy it to .eslintrc.cjs and remove .eslintrc.js
+    if (exists(eslintJsTargetPath)) {
+      replaceInFile(eslintJsTargetPath, (contents) => contents.replace(/eslintrc.js/, 'eslintrc.cjs'));
+      added.push(copyFile(eslintJsTargetPath, eslintJsTargetPath.replace('.js', '.cjs'), strict));
+      unlinkSync(eslintJsTargetPath);
+      removed.push(eslintJsTargetPath);
+    }
+
+    const eslintSourcePath = join(FILES_PATH, strict ? 'eslintrc-strict.cjs' : 'eslintrc.cjs');
+    const eslintTargetPath = join(packageRoot, '.eslintrc.cjs');
     added.push(copyFile(eslintSourcePath, eslintTargetPath, strict));
 
     if (exists(testPath)) {
-      const eslintTestSourcePath = join(FILES_PATH, strict ? 'eslintrc-test-strict.js' : 'eslintrc-test.js');
-      const eslintTestTargetPath = join(testPath, '.eslintrc.js');
+      const eslintJsTestTargetPath = join(testPath, '.eslintrc.js');
+      // if .eslintrc.js exists, copy it to .eslintrc.cjs and remove .eslintrc.js
+      if (exists(eslintJsTestTargetPath)) {
+        replaceInFile(eslintJsTestTargetPath, (contents) => contents.replace(/eslintrc.js/, 'eslintrc.cjs'));
+        added.push(copyFile(eslintJsTestTargetPath, eslintJsTestTargetPath.replace('.js', '.cjs'), strict));
+        unlinkSync(eslintJsTestTargetPath);
+        removed.push(eslintJsTestTargetPath);
+      }
+
+      const eslintTestSourcePath = join(FILES_PATH, strict ? 'eslintrc-test-strict.cjs' : 'eslintrc-test.cjs');
+      const eslintTestTargetPath = join(testPath, '.eslintrc.cjs');
       added.push(copyFile(eslintTestSourcePath, eslintTestTargetPath, strict));
     }