diff --git a/packages/util/.prettierrc.js b/packages/util/.prettierrc.js
index 534e6d35a..52881f37e 100644
--- a/packages/util/.prettierrc.js
+++ b/packages/util/.prettierrc.js
@@ -1,5 +1,12 @@
 'use strict';
 
 module.exports = {
-  singleQuote: true,
+  overrides: [
+    {
+      files: '*{js,ts}',
+      options: {
+        singleQuote: true,
+      },
+    },
+  ],
 };
diff --git a/packages/util/tests/dummy/app/templates/application.hbs b/packages/util/tests/dummy/app/templates/application.hbs
index 9d5488550..5230580f8 100644
--- a/packages/util/tests/dummy/app/templates/application.hbs
+++ b/packages/util/tests/dummy/app/templates/application.hbs
@@ -1,3 +1,3 @@
-<h2 id='title'>Welcome to Ember</h2>
+<h2 id="title">Welcome to Ember</h2>
 
 {{outlet}}
\ No newline at end of file