diff --git a/tests/scenarios/engines-test.ts b/tests/scenarios/engines-test.ts
index 4f147254b..627573f43 100644
--- a/tests/scenarios/engines-test.ts
+++ b/tests/scenarios/engines-test.ts
@@ -83,6 +83,7 @@ let engineScenarios = appScenarios.map('engines', project => {
 engineScenarios
   .skip('lts_3_28-engines') // this skip should be removed before https://github.com/embroider-build/embroider/pull/1435 is merged
   .skip('lts_4_4-engines') // this skip should be removed before https://github.com/embroider-build/embroider/pull/1435 is merged
+  .skip('lts_5_12-engines')
   .skip('release-engines') // this skip should be removed before https://github.com/embroider-build/embroider/pull/1435 is merged
   .map('without-fastboot', () => {})
   .forEachScenario(scenario => {
@@ -139,6 +140,7 @@ engineScenarios
 engineScenarios
   .skip('lts_3_28-engines') // fails due to https://github.com/emberjs/ember.js/pull/20461
   .skip('lts_4_4-engines') // fails due to https://github.com/emberjs/ember.js/pull/20461
+  .skip('lts_5_12-engines')
   .skip('release-engines') // fails due to https://github.com/emberjs/ember.js/pull/20461
   .map('with-fastboot', app => {
     app.linkDependency('ember-cli-fastboot', { baseDir: __dirname });