diff --git a/src/Concerns/Testable.php b/src/Concerns/Testable.php
index 8d5b5eed..72bf02bb 100644
--- a/src/Concerns/Testable.php
+++ b/src/Concerns/Testable.php
@@ -304,12 +304,4 @@ trait Testable
     {
         return ltrim(self::class, 'P\\');
     }
-
-    /**
-     * Determine whether this test case is being executed in a parallel environment.
-     */
-    public function isInParallel(): bool
-    {
-        return TestSuite::getInstance()->isInParallel;
-    }
 }
diff --git a/src/TestSuite.php b/src/TestSuite.php
index 320b6804..f2b5ccde 100644
--- a/src/TestSuite.php
+++ b/src/TestSuite.php
@@ -73,13 +73,6 @@ final class TestSuite
      */
     public $testPath;
 
-    /**
-     * Whether this test is running as part of a parallel suite.
-     *
-     * @var bool
-     */
-    public $isInParallel = false;
-
     /**
      * Holds an instance of the test suite.
      *
diff --git a/tests/.snapshots/success.txt b/tests/.snapshots/success.txt
index bc9e5842..a6f69129 100644
--- a/tests/.snapshots/success.txt
+++ b/tests/.snapshots/success.txt
@@ -485,11 +485,6 @@
   ✓ it can call chained macro method
   ✓ it will throw exception from call if no macro exists
 
-   WARN  Tests\Features\Parallel
-  - it can determine in the test case if it is running in parallel
-  ✓ it can determine in the test case if it is not running in parallel
-  ✓ it can skip using the test case based on parallel status
-
    PASS  Tests\Features\PendingHigherOrderTests
   ✓ get 'foo'
   ✓ get 'foo' → get 'bar' → expect true → toBeTrue 
@@ -652,5 +647,5 @@
   ✓ it is a test
   ✓ it uses correct parent class
 
-  Tests:  4 incompleted, 10 skipped, 421 passed
+  Tests:  4 incompleted, 9 skipped, 419 passed
   
\ No newline at end of file
diff --git a/tests/Features/Parallel.php b/tests/Features/Parallel.php
deleted file mode 100644
index 9bfe6ea4..00000000
--- a/tests/Features/Parallel.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-use Pest\TestSuite;
-
-it('can determine in the test case if it is running in parallel', function () {
-    expect(test()->isInParallel())->toBeTrue();
-})->skip(!TestSuite::getInstance()->isInParallel);
-
-it('can determine in the test case if it is not running in parallel', function () {
-    expect(test()->isInParallel())->toBeFalse();
-})->skip(TestSuite::getInstance()->isInParallel);
-
-it('can skip using the test case based on parallel status', function () {
-    expect(TestSuite::getInstance()->isInParallel)->toBeFalse();
-})->skip(function () { return $this->isInParallel(); });
diff --git a/tests/Hooks/BeforeAllTest.php b/tests/Hooks/BeforeAllTest.php
index 42efe051..66f5801b 100644
--- a/tests/Hooks/BeforeAllTest.php
+++ b/tests/Hooks/BeforeAllTest.php
@@ -1,14 +1,13 @@
 <?php
 
 use Pest\Support\Str;
-use Pest\TestSuite;
 
 global $globalHook;
 
 // HACK: we have to determine our $globalHook->calls baseline. This is because
 // two other tests are executed before this one due to filename ordering.
 $args   = $_SERVER['argv'] ?? [];
-$single = (isset($args[1]) && Str::endsWith(__FILE__, $args[1])) || TestSuite::getInstance()->isInParallel;
+$single = (isset($args[1]) && Str::endsWith(__FILE__, $args[1])) || ($_SERVER['PEST_PARALLEL'] ?? false);
 $offset = $single ? 0 : 2;
 
 uses()->beforeAll(function () use ($globalHook, $offset) {
diff --git a/tests/PHPUnit/CustomTestCaseInSubFolders/SubFolder/SubFolder/UsesPerSubDirectory.php b/tests/PHPUnit/CustomTestCaseInSubFolders/SubFolder/SubFolder/UsesPerSubDirectory.php
index e98a09e7..01bb8456 100644
--- a/tests/PHPUnit/CustomTestCaseInSubFolders/SubFolder/SubFolder/UsesPerSubDirectory.php
+++ b/tests/PHPUnit/CustomTestCaseInSubFolders/SubFolder/SubFolder/UsesPerSubDirectory.php
@@ -1,7 +1,5 @@
 <?php
 
-use Pest\TestSuite;
-
 test('closure was bound to CustomTestCase', function () {
     $this->assertCustomInSubFolderTrue();
-})->skip(TestSuite::getInstance()->isInParallel, 'Nested Pest.php files are not loaded in parallel.');
+});
diff --git a/tests/PHPUnit/Pest.php b/tests/PHPUnit/Pest.php
deleted file mode 100644
index 0d513bde..00000000
--- a/tests/PHPUnit/Pest.php
+++ /dev/null
@@ -1,5 +0,0 @@
-<?php
-
-use Tests\CustomTestCaseInSubFolders\SubFolder\SubFolder\CustomTestCaseInSubFolder;
-
-uses(CustomTestCaseInSubFolder::class)->in('CustomTestCaseInSubFolders/SubFolder');
diff --git a/tests/Pest.php b/tests/Pest.php
index d3fe584f..429bf74c 100644
--- a/tests/Pest.php
+++ b/tests/Pest.php
@@ -1,5 +1,9 @@
 <?php
 
+use Tests\CustomTestCaseInSubFolders\SubFolder\SubFolder\CustomTestCaseInSubFolder;
+
+uses(CustomTestCaseInSubFolder::class)->in('PHPUnit/CustomTestCaseInSubFolders/SubFolder/SubFolder');
+
 uses()->group('integration')->in('Visual');
 
 // NOTE: global test value container to be mutated and checked across files, as needed
diff --git a/tests/Visual/Success.php b/tests/Visual/Success.php
index ade53e51..4885255e 100644
--- a/tests/Visual/Success.php
+++ b/tests/Visual/Success.php
@@ -1,7 +1,5 @@
 <?php
 
-use Pest\TestSuite;
-
 test('visual snapshot of test suite on success', function () {
     $testsPath = dirname(__DIR__);
     $snapshot = implode(DIRECTORY_SEPARATOR, [
@@ -11,7 +9,7 @@ test('visual snapshot of test suite on success', function () {
     ]);
 
     $output = function () use ($testsPath) {
-        $process = (new Symfony\Component\Process\Process(['php', 'bin/pest'], dirname($testsPath), ['EXCLUDE' => 'integration', 'REBUILD_SNAPSHOTS' => false]));
+        $process = (new Symfony\Component\Process\Process(['php', 'bin/pest'], dirname($testsPath), ['EXCLUDE' => 'integration', 'REBUILD_SNAPSHOTS' => false, 'PARATEST' => 0]));
 
         $process->run();
 
@@ -37,5 +35,4 @@ test('visual snapshot of test suite on success', function () {
         expect(implode("\n", $output))->toContain(file_get_contents($snapshot));
     }
 })->skip(!getenv('REBUILD_SNAPSHOTS') && getenv('EXCLUDE'))
-    ->skip(TestSuite::getInstance()->isInParallel)
     ->skip(PHP_OS_FAMILY === 'Windows');