diff --git a/packages/backend-test-utils/package.json b/packages/backend-test-utils/package.json
index c3ba763bd2..004289d448 100644
--- a/packages/backend-test-utils/package.json
+++ b/packages/backend-test-utils/package.json
@@ -8,7 +8,8 @@
   "publishConfig": {
     "access": "public",
     "main": "dist/index.cjs.js",
-    "types": "dist/index.d.ts"
+    "types": "dist/index.d.ts",
+    "alphaTypes": "dist/index.alpha.d.ts"
   },
   "backstage": {
     "role": "node-library"
@@ -25,7 +26,7 @@
   ],
   "license": "Apache-2.0",
   "scripts": {
-    "build": "backstage-cli package build",
+    "build": "backstage-cli package build --experimental-type-build",
     "lint": "backstage-cli package lint",
     "test": "backstage-cli package test",
     "prepack": "backstage-cli package prepack",
@@ -49,6 +50,7 @@
     "@backstage/cli": "^0.18.1-next.0"
   },
   "files": [
-    "dist"
+    "dist",
+    "alpha"
   ]
 }