diff --git a/__tests__/buildkit/config.test.ts b/__tests__/buildkit/config.test.ts
index c3ac51d..6c71081 100644
--- a/__tests__/buildkit/config.test.ts
+++ b/__tests__/buildkit/config.test.ts
@@ -24,8 +24,8 @@ import {Context} from '../../src/context';
 
 const fixturesDir = path.join(__dirname, '..', 'fixtures');
 // prettier-ignore
-const tmpDir = path.join(process.env.TEMP || '/tmp', 'buildkit-config-jest').split(path.sep).join(path.posix.sep);
-const tmpName = path.join(tmpDir, '.tmpname-jest').split(path.sep).join(path.posix.sep);
+const tmpDir = path.join(process.env.TEMP || '/tmp', 'buildkit-config-jest');
+const tmpName = path.join(tmpDir, '.tmpname-jest');
 
 jest.spyOn(Context.prototype, 'tmpDir').mockImplementation((): string => {
   if (!fs.existsSync(tmpDir)) {
@@ -50,7 +50,7 @@ describe('resolve', () => {
     ['debug = true', false, 'debug = true', null],
     [`notfound.toml`, true, '', new Error('config file notfound.toml not found')],
     [
-      `${path.join(fixturesDir, 'buildkitd.toml').split(path.sep).join(path.posix.sep)}`,
+      `${path.join(fixturesDir, 'buildkitd.toml')}`,
       true,
       `debug = true
 [registry."docker.io"]
diff --git a/__tests__/buildx/buildx.test.ts b/__tests__/buildx/buildx.test.ts
index 0e182ea..7f02dcf 100644
--- a/__tests__/buildx/buildx.test.ts
+++ b/__tests__/buildx/buildx.test.ts
@@ -27,8 +27,8 @@ import {Context} from '../../src/context';
 import {Cert} from '../../src/types/buildx';
 
 // prettier-ignore
-const tmpDir = path.join(process.env.TEMP || '/tmp', 'buildx-jest').split(path.sep).join(path.posix.sep);
-const tmpName = path.join(tmpDir, '.tmpname-jest').split(path.sep).join(path.posix.sep);
+const tmpDir = path.join(process.env.TEMP || '/tmp', 'buildx-jest');
+const tmpName = path.join(tmpDir, '.tmpname-jest');
 
 jest.spyOn(Context.prototype, 'tmpDir').mockImplementation((): string => {
   if (!fs.existsSync(tmpDir)) {
diff --git a/__tests__/buildx/inputs.test.ts b/__tests__/buildx/inputs.test.ts
index 6e16f24..c600778 100644
--- a/__tests__/buildx/inputs.test.ts
+++ b/__tests__/buildx/inputs.test.ts
@@ -25,8 +25,8 @@ import {Inputs} from '../../src/buildx/inputs';
 
 const fixturesDir = path.join(__dirname, '..', 'fixtures');
 // prettier-ignore
-const tmpDir = path.join(process.env.TEMP || '/tmp', 'buildx-inputs-jest').split(path.sep).join(path.posix.sep);
-const tmpName = path.join(tmpDir, '.tmpname-jest').split(path.sep).join(path.posix.sep);
+const tmpDir = path.join(process.env.TEMP || '/tmp', 'buildx-inputs-jest');
+const tmpName = path.join(tmpDir, '.tmpname-jest');
 const metadata = `{
   "containerimage.config.digest": "sha256:059b68a595b22564a1cbc167af369349fdc2ecc1f7bc092c2235cbf601a795fd",
   "containerimage.digest": "sha256:b09b9482c72371486bb2c1d2c2a2633ed1d0b8389e12c8d52b9e052725c0c83c"
@@ -175,7 +175,7 @@ describe('resolveBuildSecret', () => {
     ['aaaaaaaa', false, '', '', new Error('aaaaaaaa is not a valid secret')],
     ['aaaaaaaa=', false, '', '', new Error('aaaaaaaa= is not a valid secret')],
     ['=bbbbbbb', false, '', '', new Error('=bbbbbbb is not a valid secret')],
-    [`foo=${path.join(fixturesDir, 'secret.txt').split(path.sep).join(path.posix.sep)}`, true, 'foo', 'bar', null],
+    [`foo=${path.join(fixturesDir, 'secret.txt')}`, true, 'foo', 'bar', null],
     [`notfound=secret`, true, '', '', new Error('secret file secret not found')]
   ])('given %p key and %p secret', async (kvp: string, file: boolean, exKey: string, exValue: string, error: Error) => {
     try {
diff --git a/__tests__/buildx/install.test.ts b/__tests__/buildx/install.test.ts
index d553b65..24c2657 100644
--- a/__tests__/buildx/install.test.ts
+++ b/__tests__/buildx/install.test.ts
@@ -23,7 +23,7 @@ import osm = require('os');
 import {Install} from '../../src/buildx/install';
 
 // prettier-ignore
-const tmpDir = path.join(process.env.TEMP || '/tmp', 'buildx-jest').split(path.sep).join(path.posix.sep);
+const tmpDir = path.join(process.env.TEMP || '/tmp', 'buildx-jest');
 
 beforeEach(() => {
   jest.clearAllMocks();
diff --git a/__tests__/context.test.ts b/__tests__/context.test.ts
index 8da6469..f9ec49e 100644
--- a/__tests__/context.test.ts
+++ b/__tests__/context.test.ts
@@ -22,8 +22,8 @@ import {describe, expect, jest, it, beforeEach, afterEach} from '@jest/globals';
 import {Context} from '../src/context';
 
 // prettier-ignore
-const tmpDir = path.join(process.env.TEMP || '/tmp', 'context-jest').split(path.sep).join(path.posix.sep);
-const tmpName = path.join(tmpDir, '.tmpname-jest').split(path.sep).join(path.posix.sep);
+const tmpDir = path.join(process.env.TEMP || '/tmp', 'context-jest');
+const tmpName = path.join(tmpDir, '.tmpname-jest');
 
 jest.spyOn(Context.prototype, 'tmpDir').mockImplementation((): string => {
   if (!fs.existsSync(tmpDir)) {
diff --git a/__tests__/docker.test.ts b/__tests__/docker.test.ts
index 75d125d..8823e43 100644
--- a/__tests__/docker.test.ts
+++ b/__tests__/docker.test.ts
@@ -60,18 +60,18 @@ describe('isAvailable', () => {
 });
 
 describe('printVersion', () => {
-  it('docker cli', () => {
+  it('docker cli', async () => {
     const execSpy = jest.spyOn(exec, 'exec');
-    Docker.printVersion(false).catch(() => {
+    await Docker.printVersion(false).catch(() => {
       // noop
     });
     expect(execSpy).toHaveBeenCalledWith(`docker`, ['version'], {
       failOnStdErr: false
     });
   });
-  it('standalone', () => {
+  it('standalone', async () => {
     const execSpy = jest.spyOn(exec, 'exec');
-    Docker.printVersion(true).catch(() => {
+    await Docker.printVersion(true).catch(() => {
       // noop
     });
     expect(execSpy).not.toHaveBeenCalledWith(`docker`, ['version'], {
diff --git a/jest.config.ts b/jest.config.ts
index d446ddb..49ba111 100644
--- a/jest.config.ts
+++ b/jest.config.ts
@@ -18,13 +18,13 @@ import fs from 'fs';
 import os from 'os';
 import path from 'path';
 
-const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'docker-actions-toolkit-')).split(path.sep).join(path.posix.sep);
+const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'docker-actions-toolkit-'));
 
 process.env = Object.assign({}, process.env, {
   TEMP: tmpDir,
   GITHUB_REPOSITORY: 'docker/actions-toolkit',
-  RUNNER_TEMP: path.join(tmpDir, 'runner-temp').split(path.sep).join(path.posix.sep),
-  RUNNER_TOOL_CACHE: path.join(tmpDir, 'runner-tool-cache').split(path.sep).join(path.posix.sep)
+  RUNNER_TEMP: path.join(tmpDir, 'runner-temp'),
+  RUNNER_TOOL_CACHE: path.join(tmpDir, 'runner-tool-cache')
 }) as {
   [key: string]: string;
 };
diff --git a/src/buildx/inputs.ts b/src/buildx/inputs.ts
index c07ea05..3f9559a 100644
--- a/src/buildx/inputs.ts
+++ b/src/buildx/inputs.ts
@@ -29,11 +29,11 @@ export class Inputs {
   }
 
   public getBuildImageIDFilePath(): string {
-    return path.join(this.context.tmpDir(), 'iidfile').split(path.sep).join(path.posix.sep);
+    return path.join(this.context.tmpDir(), 'iidfile');
   }
 
   public getBuildMetadataFilePath(): string {
-    return path.join(this.context.tmpDir(), 'metadata-file').split(path.sep).join(path.posix.sep);
+    return path.join(this.context.tmpDir(), 'metadata-file');
   }
 
   public resolveBuildImageID(): string | undefined {
diff --git a/src/buildx/install.ts b/src/buildx/install.ts
index 3b8a04b..f8f87ee 100644
--- a/src/buildx/install.ts
+++ b/src/buildx/install.ts
@@ -89,7 +89,7 @@ export class Install {
     let toolPath: string;
     toolPath = tc.find('buildx', vspec);
     if (!toolPath) {
-      const outputDir = path.join(this.context.tmpDir(), 'build-cache').split(path.sep).join(path.posix.sep);
+      const outputDir = path.join(this.context.tmpDir(), 'build-cache');
       const buildCmd = await this.buildCommand(gitContext, outputDir);
       toolPath = await exec
         .getExecOutput(buildCmd.command, buildCmd.args, {
diff --git a/src/context.ts b/src/context.ts
index 9c624b0..c0fbba9 100644
--- a/src/context.ts
+++ b/src/context.ts
@@ -27,7 +27,7 @@ export class Context {
   public buildGitContext: string;
   public provenanceBuilderID: string;
 
-  private readonly _tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'docker-actions-toolkit-')).split(path.sep).join(path.posix.sep);
+  private readonly _tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'docker-actions-toolkit-'));
 
   constructor() {
     this.gitRef = github.context.ref;