diff --git a/tests/one.ts b/tests/one.ts
index 1515b349..89ee0470 100644
--- a/tests/one.ts
+++ b/tests/one.ts
@@ -1,5 +1,5 @@
+import { runInRepo, $ } from '../utils.ts'
 import type { RunOptions } from '../types.d.ts'
-import { runInRepo } from '../utils.ts'
 
 export async function test(options: RunOptions) {
 	await runInRepo({
@@ -7,7 +7,8 @@ export async function test(options: RunOptions) {
 		repo: 'onejs/one',
 		branch: 'main',
 		build: ['clean:build', 'build'],
-		beforeTest: 'yarn playwright install chromium',
+		beforeInstall: async () => $`npm install -g bun`,
+		beforeTest: 'bunx playwright install chromium',
 		test: 'test:vite-ecosystem-ci',
 	})
 }
diff --git a/utils.ts b/utils.ts
index 6e3ee361..051cbf5a 100644
--- a/utils.ts
+++ b/utils.ts
@@ -624,6 +624,11 @@ export async function applyPackageOverrides(
 				pkg.devDependencies[name] = version
 			}
 		}
+	} else if (pm === 'bun') {
+		pkg.overrides = {
+			...pkg.overrides,
+			...overrides,
+		}
 	} else {
 		throw new Error(`unsupported package manager detected: ${pm}`)
 	}
@@ -637,6 +642,8 @@ export async function applyPackageOverrides(
 		await $`yarn install`
 	} else if (pm === 'npm') {
 		await $`npm install`
+	} else if (pm === 'bun') {
+		await $`bun install`
 	}
 }