diff --git a/__tests__/action_failed.test.ts b/__tests__/action_failed.test.ts
index 0ea3802..8411d59 100644
--- a/__tests__/action_failed.test.ts
+++ b/__tests__/action_failed.test.ts
@@ -9,6 +9,7 @@ import * as core from '@actions/core';
 import * as getcmake from '../src/get-cmake';
 import path = require('path');
 import { ToolsGetter } from '../src/get-cmake';
+import * as crypto from 'crypto';
 
 // 10 minutes
 jest.setTimeout(10 * 60 * 1000)
@@ -36,7 +37,7 @@ var coreError = jest.spyOn(core, 'error').mockImplementation(() => {});
 var toolsCacheDir = jest.spyOn(toolcache, 'cacheDir');
 
 test('testing get-cmake action failure', async () => {
-    const testId = Math.random();
+    const testId = crypto.randomBytes(16).toString('hex');
     process.exitCode
     process.env.RUNNER_TEMP = path.join(os.tmpdir(), `${testId}`);
     process.env.RUNNER_TOOL_CACHE = path.join(os.tmpdir(), `${testId}-cache`);
diff --git a/__tests__/action_succeeded.localcloud.test.ts b/__tests__/action_succeeded.localcloud.test.ts
index bd31d09..955d238 100644
--- a/__tests__/action_succeeded.localcloud.test.ts
+++ b/__tests__/action_succeeded.localcloud.test.ts
@@ -3,6 +3,7 @@
 // SPDX short identifier: MIT
 
 import * as os from 'os';
+import * as crypto from 'crypto';
 import * as toolcache from '@actions/tool-cache';
 import * as core from '@actions/core';
 import * as path from 'path'
@@ -46,7 +47,7 @@ var toolsCacheDir = jest.spyOn(toolcache, 'cacheDir');
 var toolsFind = jest.spyOn(toolcache, 'find');
 
 test('testing get-cmake action success with cloud/local cache enabled', async () => {
-    const testId = Math.random();
+    const testId = crypto.randomBytes(16).toString('hex');
     process.env.RUNNER_TEMP = path.join(os.tmpdir(), `${testId}`);
     process.env.RUNNER_TOOL_CACHE = path.join(os.tmpdir(), `${testId}-cache`);
 
@@ -78,7 +79,7 @@ test('testing get-cmake action success with cloud/local cache enabled', async ()
 });
 
 test('testing get-cmake action success with local or cloud cache hits', async () => {
-    const testId = Math.random();
+    const testId = crypto.randomBytes(16).toString('hex');
     process.env.RUNNER_TEMP = path.join(os.tmpdir(), `${testId}`);
     process.env.RUNNER_TOOL_CACHE = path.join(os.tmpdir(), `${testId}-cache`);
 
@@ -121,7 +122,7 @@ test('testing get-cmake action store and restore local cache', async () => {
     toolsCacheDir.mockRestore();
     toolsFind.mockRestore();
 
-    const testId = Math.random();
+    const testId = crypto.randomBytes(16).toString('hex');
     process.env.RUNNER_TEMP = path.join(os.tmpdir(), `${testId}`);
     process.env.RUNNER_TOOL_CACHE = path.join(os.tmpdir(), `${testId}-cache`);
     let downloadMock = undefined;
diff --git a/__tests__/cachehit.test.ts b/__tests__/cachehit.test.ts
index fd87963..2410982 100644
--- a/__tests__/cachehit.test.ts
+++ b/__tests__/cachehit.test.ts
@@ -8,6 +8,7 @@ import * as os from 'os';
 import { ToolsGetter } from '../src/get-cmake';
 import * as cache from '@actions/cache';
 import path = require('path');
+import * as crypto from 'crypto';
 
 // 10 minutes
 jest.setTimeout(10 * 60 * 1000)
@@ -24,7 +25,7 @@ const cacheRestoreCache = jest.spyOn(cache, 'restoreCache').mockImplementation((
 const addToolsToPath = jest.spyOn(ToolsGetter.prototype as any, 'addToolsToPath').mockResolvedValue(0);
 
 test('testing get-cmake with cache-hit...', async () => {
-    const testId = Math.random();
+    const testId = crypto.randomBytes(16).toString('hex');
     process.env.RUNNER_TEMP = path.join(os.tmpdir(), `${testId}`);
 
     const getter: ToolsGetter = new ToolsGetter();
diff --git a/__tests__/cachemiss.test.ts b/__tests__/cachemiss.test.ts
index 0ddec76..7721a09 100644
--- a/__tests__/cachemiss.test.ts
+++ b/__tests__/cachemiss.test.ts
@@ -9,6 +9,7 @@ import { ToolsGetter } from '../src/get-cmake';
 import * as cache from '@actions/cache';
 import * as core from '@actions/core';
 import path = require('path');
+import * as crypto from 'crypto';
 
 // 10 minutes
 jest.setTimeout(10 * 60 * 1000)
@@ -27,7 +28,7 @@ const cacheRestoreCache = jest.spyOn(cache, 'restoreCache').mockImplementation((
 const addToolsToPath = jest.spyOn(ToolsGetter.prototype as any, 'addToolsToPath').mockResolvedValue(0);
 
 test('testing get-cmake with cache-miss...', async () => {
-    const testId = Math.random();
+    const testId = crypto.randomBytes(16).toString('hex');
     process.env.RUNNER_TEMP = path.join(os.tmpdir(), `${testId}`);
     const getter: ToolsGetter = new ToolsGetter();
     await getter.run();
diff --git a/__tests__/cacherestorefailure.test.ts b/__tests__/cacherestorefailure.test.ts
index 1bd53cc..983131a 100644
--- a/__tests__/cacherestorefailure.test.ts
+++ b/__tests__/cacherestorefailure.test.ts
@@ -8,6 +8,7 @@ import * as os from 'os';
 import { ToolsGetter } from '../src/get-cmake';
 import * as cache from '@actions/cache';
 import path = require('path');
+import * as crypto from 'crypto';
 
 // 10 minutes
 jest.setTimeout(10 * 60 * 1000)
@@ -24,7 +25,7 @@ jest.spyOn(cache, 'restoreCache').mockImplementation(() => {
 const addToolsToPath = jest.spyOn(ToolsGetter.prototype as any, 'addToolsToPath').mockResolvedValue(0);
 
 test('testing get-cmake with restoreCache failure', async () => {
-    const testId = Math.random();
+    const testId = crypto.randomBytes(16).toString('hex');
     process.env.RUNNER_TEMP = path.join(os.tmpdir(), `${testId}`);
 
     const getter: ToolsGetter = new ToolsGetter();