diff --git a/packages/addon-dev/src/rollup-hbs-plugin.ts b/packages/addon-dev/src/rollup-hbs-plugin.ts
index 2baf865e0e..6fc0ff85f2 100644
--- a/packages/addon-dev/src/rollup-hbs-plugin.ts
+++ b/packages/addon-dev/src/rollup-hbs-plugin.ts
@@ -60,8 +60,10 @@ async function isTemplateOnly(hbsPath: string) {
   let jsPath = hbsPath.replace(/\.hbs$/, '.js');
   let tsPath = hbsPath.replace(/\.hbs$/, '.ts');
 
-  let hasJs = await pathExists(jsPath);
-  let hasTs = await pathExists(tsPath);
+  let [hasJs, hasTs] = await Promise.all([
+    pathExists(jsPath),
+    pathExists(tsPath),
+  ]);
 
   let hasClass = hasJs || hasTs;