diff --git a/packages/kbn-test/package.json b/packages/kbn-test/package.json
index 0cc54fa2a64c41..a01c4ebab8ad08 100644
--- a/packages/kbn-test/package.json
+++ b/packages/kbn-test/package.json
@@ -5,7 +5,7 @@
   "license": "Apache-2.0",
   "private": true,
   "scripts": {
-    "build": "babel src --out-dir target --delete-dir-on-start --extensions .ts,.js,.tsx --ignore *.test.js,**/__tests__/**",
+    "build": "babel src --out-dir target --delete-dir-on-start --extensions .ts,.js,.tsx --ignore *.test.js,**/__tests__/** --source-maps=inline",
     "kbn:bootstrap": "yarn build",
     "kbn:watch": "yarn build --watch"
   },