diff --git a/.gitignore b/.gitignore
index a99d3a9..5466e5e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ dist
 types
 .gen
 .nyc_output
+.idea/
diff --git a/src/build.ts b/src/build.ts
index 4b7848d..de30dbd 100644
--- a/src/build.ts
+++ b/src/build.ts
@@ -22,7 +22,7 @@ import { createJiti } from "jiti";
 export async function build(
   rootDir: string,
   stub: boolean,
-  inputConfig: BuildConfig = {},
+  inputConfig: BuildConfig & { config?: string } = {},
 ): Promise<void> {
   // Determine rootDir
   rootDir = resolve(process.cwd(), rootDir || ".");
@@ -31,7 +31,10 @@ export async function build(
   const jiti = createJiti(rootDir);
 
   const _buildConfig: BuildConfig | BuildConfig[] =
-    (await jiti.import("./build.config", { try: true, default: true })) || {};
+    (await jiti.import(inputConfig?.config || "./build.config", {
+      try: !inputConfig.config,
+      default: true,
+    })) || {};
 
   const buildConfigs = (
     Array.isArray(_buildConfig) ? _buildConfig : [_buildConfig]
diff --git a/src/cli.ts b/src/cli.ts
index d2b2641..47f0ae1 100755
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -17,6 +17,14 @@ const main = defineCommand({
       description: "The directory to build",
       required: false,
     },
+    config: {
+      type: "string",
+      description: [
+        "The configuration file to use relative to the current working directory.",
+        "                 Unbuild tries to read `build.config` from the build `DIR` by default.",
+        "",
+      ].join("\n"),
+    },
     watch: {
       type: "boolean",
       description: "Watch the src dir and rebuild on change (experimental)",
@@ -38,6 +46,7 @@ const main = defineCommand({
     const rootDir = resolve(process.cwd(), args.dir || ".");
     await build(rootDir, args.stub, {
       sourcemap: args.sourcemap,
+      config: args.config ? resolve(args.config) : undefined,
       stub: args.stub,
       watch: args.watch,
       rollup: {