diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d37626af5..a95e0865a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -154,6 +154,7 @@ jobs:
           - ember-lts-4.4
           - ember-lts-4.8
           - ember-lts-4.12
+          - ember-lts-5.4
           - ember-release
           - ember-beta
           - ember-canary
diff --git a/README.md b/README.md
index 5dd47cb74..161b0b53c 100644
--- a/README.md
+++ b/README.md
@@ -12,8 +12,8 @@ A client-side server to develop, test and prototype your Ember CLI app.
 
 ## Compatibility
 
-* Ember.js v3.12 or above
-* Ember CLI v3.12 or above
+* Ember.js v3.28 or above
+* Ember CLI v3.28 or above
 * Node.js v16 or above
 
 ## Installation
diff --git a/packages/ember-cli-mirage/tests/dummy/config/ember-try.js b/packages/ember-cli-mirage/tests/dummy/config/ember-try.js
index a3780d34b..fc831908a 100644
--- a/packages/ember-cli-mirage/tests/dummy/config/ember-try.js
+++ b/packages/ember-cli-mirage/tests/dummy/config/ember-try.js
@@ -47,6 +47,15 @@ module.exports = async function () {
           },
         },
       },
+      {
+        name: 'ember-lts-5.4',
+        npm: {
+          devDependencies: {
+            'ember-data': '~5.3.0',
+            'ember-source': '~5.4.0',
+          },
+        },
+      },
       {
         name: 'ember-release',
         npm: {