diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e6e2394..5522687 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,6 +17,8 @@ jobs:
         uses: pnpm/action-setup@v3
         with:
           version: 9
+      - name: Install Bun
+        uses: oven-sh/setup-bun@v1
       - name: Install Node.js
         uses: actions/setup-node@v4
         with:
@@ -43,6 +45,8 @@ jobs:
         uses: pnpm/action-setup@v3
         with:
           version: 9
+      - name: Install Bun
+        uses: oven-sh/setup-bun@v1
       - name: Install Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v4
         with:
@@ -67,6 +71,8 @@ jobs:
         uses: pnpm/action-setup@v3
         with:
           version: 7
+      - name: Install Bun
+        uses: oven-sh/setup-bun@v1
       - name: Install Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v4
         with:
diff --git a/index.js b/index.js
index b626a23..fe0f81e 100644
--- a/index.js
+++ b/index.js
@@ -46,6 +46,8 @@ function detectLockfile() {
 
   if (existsSync(lockfilePnpm)) {
     return { file: lockfilePnpm, mode: 'pnpm' }
+  } else if (existsSync(lockfileBun)) {
+    return { file: lockfileBun, mode: 'bun' }
   } else if (existsSync(lockfileNpm)) {
     return { file: lockfileNpm, mode: 'npm' }
   } else if (existsSync(lockfileYarn)) {
diff --git a/test/index.test.js b/test/index.test.js
index 496fbb3..7e4c93a 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -265,7 +265,7 @@ test('updates caniuse-lite for pnpm', async () => {
 })
 
 test('updates caniuse-lite for bun', async () => {
-  let dir = await chdir('update-bun', 'package.json', 'bun.lockb')
+  await chdir('update-bun', 'package.json', 'bun.lockb')
   match(
     runUpdate(),
     `Latest version:     ${caniuse.version}\n` +
@@ -274,8 +274,8 @@ test('updates caniuse-lite for bun', async () => {
       'caniuse-lite has been successfully updated\n'
   )
 
-  let lock = (await readFile(join(dir, 'bun.lockb'))).toString()
-  ok(lock.includes(`/caniuse-lite-${caniuse.version}`))
+  let pmls = execSync('bun pm ls --all', { env: { ...process.env, FORCE_COLOR: "0", NO_COLOR: "1" } }).toString()
+  ok(pmls.includes(`caniuse-lite@${caniuse.version}`))
 })
 
 test.run()