diff --git a/.github/workflows/basic-validation.yml b/.github/workflows/basic-validation.yml
index e93e5800..37fa323e 100644
--- a/.github/workflows/basic-validation.yml
+++ b/.github/workflows/basic-validation.yml
@@ -16,4 +16,4 @@ jobs:
     name: Basic validation
     uses: actions/reusable-workflows/.github/workflows/basic-validation.yml@main
     with:
-      node-version: '24.x'
+      node-version: '20.x'
diff --git a/.github/workflows/check-dist.yml b/.github/workflows/check-dist.yml
index 90ef986a..509ea6cc 100644
--- a/.github/workflows/check-dist.yml
+++ b/.github/workflows/check-dist.yml
@@ -16,4 +16,4 @@ jobs:
     name: Check dist/
     uses: actions/reusable-workflows/.github/workflows/check-dist.yml@main
     with:
-      node-version: '24.x'
+      node-version: '20.x'
diff --git a/.licenses/npm/@types/node.dep.yml b/.licenses/npm/@types/node.dep.yml
index 06fb919d..86544f48 100644
--- a/.licenses/npm/@types/node.dep.yml
+++ b/.licenses/npm/@types/node.dep.yml
@@ -1,6 +1,6 @@
 ---
 name: "@types/node"
-version: 20.11.24
+version: 24.1.0
 type: npm
 summary: TypeScript definitions for node
 homepage: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/node
diff --git a/.licenses/npm/undici-types.dep.yml b/.licenses/npm/undici-types.dep.yml
index a65b8aff..370219bf 100644
--- a/.licenses/npm/undici-types.dep.yml
+++ b/.licenses/npm/undici-types.dep.yml
@@ -1,15 +1,17 @@
 ---
 name: undici-types
-version: 5.26.5
+version: 7.8.0
 type: npm
 summary: A stand-alone types package for Undici
 homepage: https://undici.nodejs.org
 license: mit
 licenses:
-- sources: Auto-generated MIT license text
+- sources: LICENSE
   text: |
     MIT License
 
+    Copyright (c) Matteo Collina and Undici contributors
+
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal
     in the Software without restriction, including without limitation the rights
diff --git a/__tests__/distributors/adopt-installer.test.ts b/__tests__/distributors/adopt-installer.test.ts
index 110b5cc3..eedf9484 100644
--- a/__tests__/distributors/adopt-installer.test.ts
+++ b/__tests__/distributors/adopt-installer.test.ts
@@ -8,10 +8,6 @@ import {JavaInstallerOptions} from '../../src/distributions/base-models';
 
 import os from 'os';
 
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
-
 import manifestData from '../data/adopt.json';
 
 describe('getAvailableVersions', () => {
@@ -195,7 +191,7 @@ describe('getAvailableVersions', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: string) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
 
       const installerOptions: JavaInstallerOptions = {
         version: '17',
diff --git a/__tests__/distributors/base-installer.test.ts b/__tests__/distributors/base-installer.test.ts
index acf9f0c2..08a95828 100644
--- a/__tests__/distributors/base-installer.test.ts
+++ b/__tests__/distributors/base-installer.test.ts
@@ -14,10 +14,6 @@ import {
 
 import os from 'os';
 
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
-
 class EmptyJavaBase extends JavaBase {
   constructor(installerOptions: JavaInstallerOptions) {
     super('Empty', installerOptions);
@@ -291,7 +287,7 @@ describe('setupJava', () => {
     spyCoreSetOutput = jest.spyOn(core, 'setOutput');
     spyCoreSetOutput.mockImplementation(() => undefined);
 
-    jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture('x86'));
+    jest.spyOn(os, 'arch').mockReturnValue('x86' as ReturnType<typeof os.arch>);
   });
 
   afterEach(() => {
diff --git a/__tests__/distributors/corretto-installer.test.ts b/__tests__/distributors/corretto-installer.test.ts
index 059020f5..38a96481 100644
--- a/__tests__/distributors/corretto-installer.test.ts
+++ b/__tests__/distributors/corretto-installer.test.ts
@@ -6,10 +6,6 @@ import * as util from '../../src/util';
 import os from 'os';
 import {isGeneratorFunction} from 'util/types';
 
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
-
 import manifestData from '../data/corretto.json';
 
 describe('getAvailableVersions', () => {
@@ -207,28 +203,24 @@ describe('getAvailableVersions', () => {
     });
 
     it.each([
-      ['arm64', 'aarch64'],
-      ['amd64', 'x64']
+      ['amd64', 'x64'],
+      ['arm64', 'aarch64']
     ])(
       'defaults to os.arch(): %s mapped to distro arch: %s',
       async (osArch: string, distroArch: string) => {
-        jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+        jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
 
-        const version = '17';
-        const installerOptions: JavaInstallerOptions = {
-          version,
+        const distribution = new CorrettoDistribution({
+          version: '17',
           architecture: '', // to get default value
           packageType: 'jdk',
           checkLatest: false
-        };
-
-        const distribution = new CorrettoDistribution(installerOptions);
-        mockPlatform(distribution, 'macos');
+        });
 
         const expectedLink = `https://corretto.aws/downloads/resources/17.0.2.8.1/amazon-corretto-17.0.2.8.1-macosx-${distroArch}.tar.gz`;
 
         const availableVersion = await distribution['findPackageForDownload'](
-          version
+          '17'
         );
         expect(availableVersion).not.toBeNull();
         expect(availableVersion.url).toBe(expectedLink);
diff --git a/__tests__/distributors/graalvm-installer.test.ts b/__tests__/distributors/graalvm-installer.test.ts
index 8c2ab52b..3c07d3f2 100644
--- a/__tests__/distributors/graalvm-installer.test.ts
+++ b/__tests__/distributors/graalvm-installer.test.ts
@@ -1,9 +1,5 @@
 import {GraalVMDistribution} from '../../src/distributions/graalvm/installer';
 import os from 'os';
-
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
 import * as core from '@actions/core';
 import {getDownloadArchiveExtension} from '../../src/util';
 import {HttpClient} from '@actions/http-client';
@@ -102,31 +98,32 @@ describe('findPackageForDownload', () => {
   });
 
   it.each([
-    ['amd64', 'x64'],
-    ['arm64', 'aarch64']
+    ['amd64', ['x64', 'amd64']],
+    ['arm64', ['aarch64', 'arm64']]
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
-    async (osArch: string, distroArch: string) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
-      jest.spyOn(os, 'platform').mockReturnValue('linux');
+    async (osArch: string, distroArchs: string[]) => {
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
 
-      const version = '21';
-      const distro = new GraalVMDistribution({
-        version,
+      const distribution = new GraalVMDistribution({
+        version: '21',
         architecture: '', // to get default value
         packageType: 'jdk',
         checkLatest: false
       });
 
       const osType = distribution.getPlatform();
-      if (osType === 'windows' && distroArch == 'aarch64') {
+      if (osType === 'windows' && distroArchs.includes('aarch64')) {
         return; // skip, aarch64 is not available for Windows
       }
       const archiveType = getDownloadArchiveExtension();
-      const result = await distro['findPackageForDownload'](version);
-      const expectedUrl = `https://download.oracle.com/graalvm/21/latest/graalvm-jdk-21_${osType}-${distroArch}_bin.${archiveType}`;
+      const result = await distribution['findPackageForDownload']('21');
 
-      expect(result.url).toBe(expectedUrl);
+      const expectedUrls = distroArchs.map(distroArch =>
+        `https://download.oracle.com/graalvm/21/latest/graalvm-jdk-21_${osType}-${distroArch}_bin.${archiveType}`
+      );
+
+      expect(expectedUrls).toContain(result.url);
     }
   );
 
diff --git a/__tests__/distributors/liberica-installer.test.ts b/__tests__/distributors/liberica-installer.test.ts
index dada9223..25f6db05 100644
--- a/__tests__/distributors/liberica-installer.test.ts
+++ b/__tests__/distributors/liberica-installer.test.ts
@@ -6,10 +6,6 @@ import {
 import {HttpClient} from '@actions/http-client';
 import os from 'os';
 
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
-
 import manifestData from '../data/liberica.json';
 
 describe('getAvailableVersions', () => {
@@ -109,9 +105,9 @@ describe('getAvailableVersions', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: DistroArch) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
 
-      const distribution = new LibericaDistributions({
+      const distributions = new LibericaDistributions({
         version: '17',
         architecture: '', // to get default value
         packageType: 'jdk',
@@ -121,11 +117,11 @@ describe('getAvailableVersions', () => {
       const additionalParams =
         '&installation-type=archive&fields=downloadUrl%2Cversion%2CfeatureVersion%2CinterimVersion%2C' +
         'updateVersion%2CbuildVersion';
-      distribution['getPlatformOption'] = () => 'macos';
+      distributions['getPlatformOption'] = () => 'macos';
 
       const buildUrl = `https://api.bell-sw.com/v1/liberica/releases?os=macos&bundle-type=jdk&bitness=${distroArch.bitness}&arch=${distroArch.arch}&build-type=all${additionalParams}`;
 
-      await distribution['getAvailableVersions']();
+      await distributions['getAvailableVersions']();
 
       expect(spyHttpClient.mock.calls).toHaveLength(1);
       expect(spyHttpClient.mock.calls[0][0]).toBe(buildUrl);
diff --git a/__tests__/distributors/liberica-linux-installer.test.ts b/__tests__/distributors/liberica-linux-installer.test.ts
index a5511a12..6971f763 100644
--- a/__tests__/distributors/liberica-linux-installer.test.ts
+++ b/__tests__/distributors/liberica-linux-installer.test.ts
@@ -6,10 +6,6 @@ import {
 import {HttpClient} from '@actions/http-client';
 import os from 'os';
 
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
-
 import manifestData from '../data/liberica-linux.json';
 
 describe('getAvailableVersions', () => {
@@ -109,7 +105,7 @@ describe('getAvailableVersions', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: DistroArch) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
 
       const distribution = new LibericaDistributions({
         version: '17',
diff --git a/__tests__/distributors/liberica-windows-installer.test.ts b/__tests__/distributors/liberica-windows-installer.test.ts
index 1cbf18d2..38822a7f 100644
--- a/__tests__/distributors/liberica-windows-installer.test.ts
+++ b/__tests__/distributors/liberica-windows-installer.test.ts
@@ -6,10 +6,6 @@ import {
 import {HttpClient} from '@actions/http-client';
 import os from 'os';
 
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
-
 import manifestData from '../data/liberica-windows.json';
 
 describe('getAvailableVersions', () => {
@@ -109,7 +105,7 @@ describe('getAvailableVersions', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: DistroArch) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
 
       const distribution = new LibericaDistributions({
         version: '17',
diff --git a/__tests__/distributors/microsoft-installer.test.ts b/__tests__/distributors/microsoft-installer.test.ts
index ee526ff2..0c9f6022 100644
--- a/__tests__/distributors/microsoft-installer.test.ts
+++ b/__tests__/distributors/microsoft-installer.test.ts
@@ -1,9 +1,5 @@
 import {MicrosoftDistributions} from '../../src/distributions/microsoft/installer';
 import os from 'os';
-
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
 import data from '../data/microsoft.json';
 import * as httpm from '@actions/http-client';
 import * as core from '@actions/core';
@@ -99,7 +95,7 @@ describe('findPackageForDownload', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: string) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
       jest.spyOn(os, 'platform').mockReturnValue('darwin');
 
       const version = '17';
@@ -123,7 +119,7 @@ describe('findPackageForDownload', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: string) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
       jest.spyOn(os, 'platform').mockReturnValue('linux');
 
       const version = '17';
@@ -147,7 +143,7 @@ describe('findPackageForDownload', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: string) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
       jest.spyOn(os, 'platform').mockReturnValue('win32');
 
       const version = '17';
diff --git a/__tests__/distributors/oracle-installer.test.ts b/__tests__/distributors/oracle-installer.test.ts
index edb90b32..7211d8e6 100644
--- a/__tests__/distributors/oracle-installer.test.ts
+++ b/__tests__/distributors/oracle-installer.test.ts
@@ -1,9 +1,5 @@
 import {OracleDistribution} from '../../src/distributions/oracle/installer';
 import os from 'os';
-
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
 import * as core from '@actions/core';
 import {getDownloadArchiveExtension} from '../../src/util';
 import {HttpClient} from '@actions/http-client';
@@ -99,7 +95,7 @@ describe('findPackageForDownload', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: string) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
       jest.spyOn(os, 'platform').mockReturnValue('linux');
 
       const version = '18';
diff --git a/__tests__/distributors/temurin-installer.test.ts b/__tests__/distributors/temurin-installer.test.ts
index 0bdedaad..7aa19dca 100644
--- a/__tests__/distributors/temurin-installer.test.ts
+++ b/__tests__/distributors/temurin-installer.test.ts
@@ -1,9 +1,5 @@
 import {HttpClient} from '@actions/http-client';
 import os from 'os';
-
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
 import {
   TemurinDistribution,
   TemurinImplementation
@@ -151,7 +147,7 @@ describe('getAvailableVersions', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: string) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(distroArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
 
       const installerOptions: JavaInstallerOptions = {
         version: '17',
diff --git a/__tests__/distributors/zulu-installer.test.ts b/__tests__/distributors/zulu-installer.test.ts
index 1b0fe449..99b9756e 100644
--- a/__tests__/distributors/zulu-installer.test.ts
+++ b/__tests__/distributors/zulu-installer.test.ts
@@ -1,14 +1,9 @@
 import {HttpClient} from '@actions/http-client';
-import * as semver from 'semver';
 import {ZuluDistribution} from '../../src/distributions/zulu/installer';
 import {IZuluVersions} from '../../src/distributions/zulu/models';
 import * as utils from '../../src/util';
 import os from 'os';
 
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
-
 import manifestData from '../data/zulu-releases-default.json';
 
 describe('getAvailableVersions', () => {
@@ -130,7 +125,7 @@ describe('getAvailableVersions', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: DistroArch) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
 
       const distribution = new ZuluDistribution({
         version: '17',
diff --git a/__tests__/distributors/zulu-linux-installer.test.ts b/__tests__/distributors/zulu-linux-installer.test.ts
index 946dbdda..9897e080 100644
--- a/__tests__/distributors/zulu-linux-installer.test.ts
+++ b/__tests__/distributors/zulu-linux-installer.test.ts
@@ -5,10 +5,6 @@ import {IZuluVersions} from '../../src/distributions/zulu/models';
 import * as utils from '../../src/util';
 import os from 'os';
 
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
-
 import manifestData from '../data/zulu-linux.json';
 
 describe('getAvailableVersions', () => {
@@ -130,7 +126,7 @@ describe('getAvailableVersions', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: DistroArch) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
 
       const distribution = new ZuluDistribution({
         version: '17',
@@ -139,7 +135,9 @@ describe('getAvailableVersions', () => {
         checkLatest: false
       });
       distribution['getPlatformOption'] = () => 'linux';
-      const buildUrl = `https://api.azul.com/zulu/download/community/v1.0/bundles/?os=linux&ext=zip&bundle_type=jdk&javafx=false&arch=${distroArch.arch}&hw_bitness=${distroArch.bitness}&release_status=ga`;
+      // Override extension for linux default arch case to match util behavior
+      spyUtilGetDownloadArchiveExtension.mockReturnValue('tar.gz');
+      const buildUrl = `https://api.azul.com/zulu/download/community/v1.0/bundles/?os=linux&ext=tar.gz&bundle_type=jdk&javafx=false&arch=${distroArch.arch}&hw_bitness=${distroArch.bitness}&release_status=ga`;
 
       await distribution['getAvailableVersions']();
 
diff --git a/__tests__/distributors/zulu-windows-installer.test.ts b/__tests__/distributors/zulu-windows-installer.test.ts
index b8e802eb..e22f1488 100644
--- a/__tests__/distributors/zulu-windows-installer.test.ts
+++ b/__tests__/distributors/zulu-windows-installer.test.ts
@@ -5,10 +5,6 @@ import {IZuluVersions} from '../../src/distributions/zulu/models';
 import * as utils from '../../src/util';
 import os from 'os';
 
-function mockArchitecture(arch: string): NodeJS.Architecture {
-  return arch as NodeJS.Architecture;
-}
-
 import manifestData from '../data/zulu-windows.json';
 
 describe('getAvailableVersions', () => {
@@ -130,7 +126,7 @@ describe('getAvailableVersions', () => {
   ])(
     'defaults to os.arch(): %s mapped to distro arch: %s',
     async (osArch: string, distroArch: DistroArch) => {
-      jest.spyOn(os, 'arch').mockReturnValue(mockArchitecture(osArch));
+      jest.spyOn(os, 'arch').mockReturnValue(osArch as ReturnType<typeof os.arch>);
 
       const distribution = new ZuluDistribution({
         version: '17',
diff --git a/__tests__/toolchains.test.ts b/__tests__/toolchains.test.ts
index 6d4bea26..483077dc 100644
--- a/__tests__/toolchains.test.ts
+++ b/__tests__/toolchains.test.ts
@@ -6,8 +6,7 @@ import * as io from '@actions/io';
 import * as toolchains from '../src/toolchains';
 import {M2_DIR, MVN_TOOLCHAINS_FILE} from '../src/constants';
 
-const tempDir = fs.mkdtempSync(path.join(os.tmpdir(), 'setup-java-test-'));
-const m2Dir = path.join(tempDir, M2_DIR);
+const m2Dir = path.join(__dirname, M2_DIR);
 const toolchainsFile = path.join(m2Dir, MVN_TOOLCHAINS_FILE);
 
 describe('toolchains tests', () => {
@@ -17,7 +16,7 @@ describe('toolchains tests', () => {
   beforeEach(async () => {
     await io.rmRF(m2Dir);
     spyOSHomedir = jest.spyOn(os, 'homedir');
-    spyOSHomedir.mockReturnValue(tempDir);
+    spyOSHomedir.mockReturnValue(__dirname);
     spyInfo = jest.spyOn(core, 'info');
     spyInfo.mockImplementation(() => null);
   }, 300000);
@@ -25,7 +24,6 @@ describe('toolchains tests', () => {
   afterAll(async () => {
     try {
       await io.rmRF(m2Dir);
-      await io.rmRF(tempDir);
     } catch {
       console.log('Failed to remove test directories');
     }
@@ -42,7 +40,7 @@ describe('toolchains tests', () => {
       jdkHome: '/opt/hostedtoolcache/Java_Temurin-Hotspot_jdk/17.0.1-12/x64'
     };
 
-    const altHome = path.join(tempDir, 'runner', 'toolchains');
+    const altHome = path.join(__dirname, 'runner', 'toolchains');
     const altToolchainsFile = path.join(altHome, MVN_TOOLCHAINS_FILE);
     await io.rmRF(altHome); // ensure it doesn't already exist