diff --git a/package.json b/package.json
index 19d5a4804..a33caa13a 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "description": "A GitHub Action to configure AWS credentials",
   "version": "4.0.3",
   "scripts": {
-    "build": "tsc --project tsconfig.build.json",
+    "build": "tsc",
     "lint": "biome check --error-on-warnings ./src",
     "package": "npm run build && ncc build --license THIRD-PARTY -o dist && ncc build src/cleanup/index.ts -o dist/cleanup && cpy dist/THIRD-PARTY . && del-cli dist/THIRD-PARTY",
     "test": "npm run lint && vitest run"
diff --git a/tsconfig.build.json b/tsconfig.build.json
deleted file mode 100644
index 8f01a4125..000000000
--- a/tsconfig.build.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "exclude": [
-    "test/**/*.ts"
-  ],
-  "compilerOptions": {
-    "rootDir": "src"
-  },
-}
diff --git a/tsconfig.json b/tsconfig.json
index 14282ad01..c7f8c1c77 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -22,12 +22,14 @@
     "lib": [ "ES2020" ],
     "target": "ES2020",
     "noErrorTruncation": true,
-    "esModuleInterop": true
+    "esModuleInterop": true,
+    "rootDir": "src",
   },
   "include": [
-    "src/**/*.ts",
-    "test/**/*.test.ts"
+    "src/**/*.ts"
+  ],
+  "exclude": [
+    "test/**/*.ts"
   ],
-  "exclude": [],
 }
 
diff --git a/tsconfig.test.json b/tsconfig.test.json
new file mode 100644
index 000000000..fe3a1ffa3
--- /dev/null
+++ b/tsconfig.test.json
@@ -0,0 +1,11 @@
+{
+  "extends": "./tsconfig.json",
+  "include": [
+    "test/**/*.ts",
+    "src/**/*.ts"
+  ],
+  "exclude": [],
+  "compilerOptions": {
+    "rootDir": "./"
+  },
+}
diff --git a/vitest.config.mts b/vitest.config.mts
index f6c24fa14..beb0aa05d 100644
--- a/vitest.config.mts
+++ b/vitest.config.mts
@@ -5,5 +5,6 @@ export default defineConfig({
     passWithNoTests: true,
     include: ['test/**/*.test.ts'],
     coverage: { enabled: true },
+    typecheck: { tsconfig: './tsconfig.test.json' },
   },
 });