diff --git a/.try.mjs b/.try.mjs
index 939a6fc8..a090185c 100644
--- a/.try.mjs
+++ b/.try.mjs
@@ -25,6 +25,21 @@ const compatDeps = {
 
 export default {
   scenarios: [
+    {
+      name: 'ember-lts-3.28',
+      npm: {
+        devDependencies: {
+          'ember-source': '~3.28.0',
+          '@glimmer/component': '^1.0.0',
+          ...compatDeps,
+          'ember-cli': '~4.12.0',
+        },
+      },
+      env: {
+        ENABLE_COMPAT_BUILD: true,
+      },
+      files: compatFiles,
+    },
     {
       name: 'ember-lts-4.12',
       npm: {