diff --git a/backend/package-lock.json b/backend/package-lock.json
index 3e1209b..b47f503 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -33,6 +33,7 @@
         "ts-node": "^10.9.2",
         "tsx": "^4.19.2",
         "typescript": "^5.6.3",
+        "vite": "^5.4.11",
         "vitest": "^2.1.8"
       }
     },
diff --git a/backend/package.json b/backend/package.json
index 4c55ae3..0915060 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -37,6 +37,7 @@
     "ts-node": "^10.9.2",
     "tsx": "^4.19.2",
     "typescript": "^5.6.3",
+    "vite": "^5.4.11",
     "vitest": "^2.1.8"
   }
 }
diff --git a/backend/tsconfig.json b/backend/tsconfig.json
index e469286..1655ef8 100644
--- a/backend/tsconfig.json
+++ b/backend/tsconfig.json
@@ -3,8 +3,8 @@
     "lib": ["esnext", "dom"],
     "types": ["vitest/globals"],
     "target": "es6",
-    "module": "commonjs",
-    "moduleResolution": "node16",
+    "module": "preserve",
+    "moduleResolution": "bundler",
     "sourceMap": true,
     "strict": true,
     "esModuleInterop": true,