diff --git a/package.json b/package.json
index 9181a992..b6154fcb 100644
--- a/package.json
+++ b/package.json
@@ -83,5 +83,5 @@
   "volta": {
     "node": "20.13.1"
   },
-  "packageManager": "yarn@4.2.2"
+  "packageManager": "yarn@4.3.1"
 }
diff --git a/test/e2e/recipe/index.ts b/test/e2e/recipe/index.ts
index 38cf4804..97a1e05c 100644
--- a/test/e2e/recipe/index.ts
+++ b/test/e2e/recipe/index.ts
@@ -199,6 +199,8 @@ export class RecipeRunner {
         shell: true,
         cwd: appPath,
         stdio: process.env.DEBUG ? 'inherit' : 'pipe',
+        // Yarn v4 fail to install in CI without lock files
+        env: { ...process.env, YARN_ENABLE_IMMUTABLE_INSTALLS: 'false' },
       });
 
       if (result.status) {
diff --git a/test/unit/getPath-test-app/package.json b/test/unit/getPath-test-app/package.json
index a3e1e5fc..1bc82b78 100644
--- a/test/unit/getPath-test-app/package.json
+++ b/test/unit/getPath-test-app/package.json
@@ -3,7 +3,6 @@
   "version": "1.0.0",
   "main": "main.js",
   "scripts": {
-
     "start": "../../../node_modules/.bin/electron ."
   }
 }
diff --git a/test/unit/getPath-test-app/yarn.lock b/test/unit/getPath-test-app/yarn.lock
deleted file mode 100644
index e69de29b..00000000
diff --git a/test/unit/getPath.test.ts b/test/unit/getPath.test.ts
index f72f1177..e90db47b 100644
--- a/test/unit/getPath.test.ts
+++ b/test/unit/getPath.test.ts
@@ -4,7 +4,7 @@ import { describe, expect, test } from 'vitest';
 
 describe('app.getPath', () => {
   test('not called before init', () => {
-    const result = spawnSync('yarn', ['start'], { cwd: join(__dirname, 'getPath-test-app') });
+    const result = spawnSync('npm', ['start'], { cwd: join(__dirname, 'getPath-test-app') });
     // status is null on Windows in CI for some unknown reason
     if (process.platform !== 'win32') {
       expect(result.status).to.equal(0);