diff --git a/packages/backend-core/tsconfig.test.json b/packages/backend-core/tsconfig.test.json
index 48322b7a94..0e3e7a79b2 100644
--- a/packages/backend-core/tsconfig.test.json
+++ b/packages/backend-core/tsconfig.test.json
@@ -1,7 +1,8 @@
 {
   "extends": "../../tsconfig.build.json",
   "compilerOptions": {
-    "outDir": "dist"
+    "outDir": "dist",
+    "sourceMap": true
   },
   "include": ["tests/**/*.js", "tests/**/*.ts"],
   "exclude": ["node_modules", "dist"]