diff --git a/packages/vite/src/optimize-deps.ts b/packages/vite/src/optimize-deps.ts
index 61126431c..13e9b9e1b 100644
--- a/packages/vite/src/optimize-deps.ts
+++ b/packages/vite/src/optimize-deps.ts
@@ -9,9 +9,6 @@ export function optimizeDeps(): OptimizeDeps {
   return {
     exclude: ['@embroider/macros'],
     extensions: ['.hbs', '.gjs', '.gts'],
-    loader: {
-      '.gts': 'ts',
-    },
     esbuildOptions: {
       plugins: [esBuildResolver()],
     },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 2c9ff85fc..03539f506 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1934,6 +1934,9 @@ importers:
       '@babel/plugin-proposal-decorators':
         specifier: ^7.21.0
         version: 7.24.7(@babel/core@7.25.2)
+      '@babel/plugin-transform-typescript':
+        specifier: ^7.21.3
+        version: 7.25.2(@babel/core@7.25.2)
       '@ember/optional-features':
         specifier: ^2.0.0
         version: 2.1.0
@@ -9168,6 +9171,9 @@ packages:
 
   /ajv-formats@2.1.1:
     resolution: {integrity: sha512-Wx0Kx52hxE7C18hkMEggYlEifqWZtYaRgouJor+WMdPnQyEK13vgEWyVNup7SoeeoLMsr4kf5h6dOW11I15MUA==}
+    peerDependenciesMeta:
+      ajv:
+        optional: true
     dependencies:
       ajv: 8.17.1
 
diff --git a/tests/ts-app-template/babel.config.cjs b/tests/ts-app-template/babel.config.cjs
index 29a153bfc..e6248182d 100644
--- a/tests/ts-app-template/babel.config.cjs
+++ b/tests/ts-app-template/babel.config.cjs
@@ -2,6 +2,7 @@ const { babelCompatSupport, templateCompatSupport } = require('@embroider/compat
 
 module.exports = {
   plugins: [
+    ['@babel/plugin-transform-typescript'],
     [
       'babel-plugin-ember-template-compilation',
       {
diff --git a/tests/ts-app-template/package.json b/tests/ts-app-template/package.json
index 2b35c5725..37dc2f460 100644
--- a/tests/ts-app-template/package.json
+++ b/tests/ts-app-template/package.json
@@ -30,6 +30,7 @@
   },
   "devDependencies": {
     "@babel/core": "^7.22.20",
+    "@babel/plugin-transform-typescript": "^7.21.3",
     "@babel/eslint-parser": "^7.21.3",
     "@babel/plugin-proposal-decorators": "^7.21.0",
     "@ember/optional-features": "^2.0.0",