diff --git a/test/integration/image-optimizer/test/old-sharp.test.ts b/test/integration/image-optimizer/test/old-sharp.test.ts
index 0f16eba78a17a..ed402e4d39ef2 100644
--- a/test/integration/image-optimizer/test/old-sharp.test.ts
+++ b/test/integration/image-optimizer/test/old-sharp.test.ts
@@ -11,17 +11,17 @@ describe('with outdated sharp', () => {
     await fs.writeFile(
       join(appDir, 'package.json'),
       JSON.stringify({
-        packageManager: 'yarn@1.22.19',
+        packageManager: 'npm@10.2.0',
       })
     )
-    await execa('yarn', ['add', 'sharp@0.26.3'], {
+    await execa('npm', ['add', 'sharp@0.26.3'], {
       cwd: appDir,
       stdio: 'inherit',
     })
   })
   afterAll(async () => {
     await fs.remove(join(appDir, 'node_modules'))
-    await fs.remove(join(appDir, 'yarn.lock'))
+    await fs.remove(join(appDir, 'package-lock.json'))
     await fs.remove(join(appDir, 'package.json'))
   })
 
diff --git a/test/integration/image-optimizer/test/sharp.test.ts b/test/integration/image-optimizer/test/sharp.test.ts
index 6adb74221122a..4781ce43a5e63 100644
--- a/test/integration/image-optimizer/test/sharp.test.ts
+++ b/test/integration/image-optimizer/test/sharp.test.ts
@@ -11,17 +11,17 @@ describe('with latest sharp', () => {
     await fs.writeFile(
       join(appDir, 'package.json'),
       JSON.stringify({
-        packageManager: 'yarn@1.22.19',
+        packageManager: 'npm@10.2.0',
       })
     )
-    await execa('yarn', ['add', 'sharp'], {
+    await execa('npm', ['add', 'sharp@0.33.0-alpha.9'], {
       cwd: appDir,
       stdio: 'inherit',
     })
   })
   afterAll(async () => {
     await fs.remove(join(appDir, 'node_modules'))
-    await fs.remove(join(appDir, 'yarn.lock'))
+    await fs.remove(join(appDir, 'package-lock.json'))
     await fs.remove(join(appDir, 'package.json'))
   })
 
diff --git a/test/integration/image-optimizer/test/util.ts b/test/integration/image-optimizer/test/util.ts
index 3eb9acf795d11..f3442cde830ab 100644
--- a/test/integration/image-optimizer/test/util.ts
+++ b/test/integration/image-optimizer/test/util.ts
@@ -163,9 +163,7 @@ export function runTests(ctx) {
           'custom-sharp.js.nft.json'
         )
       )
-      expect(traceFile.files.some((file) => file.includes('sharp/build'))).toBe(
-        true
-      )
+      expect(traceFile.files.some((file) => file.includes('sharp/'))).toBe(true)
     })
   }