diff --git a/src/Plugins/Tia.php b/src/Plugins/Tia.php
index 50936c0d..9c36ce28 100644
--- a/src/Plugins/Tia.php
+++ b/src/Plugins/Tia.php
@@ -49,6 +49,10 @@ final class Tia implements AddsOutput, HandlesArguments, Terminable
 
     private const string FILTERED_OPTION = '--filtered';
 
+    private const string ENV_TIA = 'PEST_TIA';
+
+    private const string ENV_FILTERED = 'PEST_TIA_FILTERED';
+
     public const string KEY_GRAPH = 'graph.json';
 
     public const string KEY_AFFECTED = 'affected.json';
@@ -174,7 +178,7 @@ final class Tia implements AddsOutput, HandlesArguments, Terminable
      */
     public static function isEnabledForRun(array $arguments): bool
     {
-        if (in_array(self::OPTION, $arguments, true)) {
+        if (in_array(self::OPTION, $arguments, true) || self::envFlagEnabled(self::ENV_TIA)) {
             return true;
         }
 
@@ -188,6 +192,11 @@ final class Tia implements AddsOutput, HandlesArguments, Terminable
         return ! ($watchPatterns->isLocally() && in_array('--ci', $arguments, true));
     }
 
+    private static function envFlagEnabled(string $name): bool
+    {
+        return filter_var(getenv($name), FILTER_VALIDATE_BOOL);
+    }
+
     public function getStatus(string $filename, string $testId): ?TestStatus
     {
         if (! $this->replayGraph instanceof Graph) {
@@ -249,11 +258,11 @@ final class Tia implements AddsOutput, HandlesArguments, Terminable
         /** @var WatchPatterns $watchPatterns */
         $watchPatterns = Container::getInstance()->get(WatchPatterns::class);
         $disabled = $this->hasArgument(self::NO_OPTION, $arguments);
-        $cliEnabled = $this->hasArgument(self::OPTION, $arguments);
+        $cliEnabled = $this->hasArgument(self::OPTION, $arguments) || self::envFlagEnabled(self::ENV_TIA);
         $alwaysEnabled = $watchPatterns->isEnabled()
             && (! $watchPatterns->isLocally() || Environment::name() === Environment::LOCAL);
         $enabled = ! $disabled && ($cliEnabled || $alwaysEnabled);
-        $this->filteredMode = ($this->hasArgument(self::FILTERED_OPTION, $arguments) || $watchPatterns->isFiltered())
+        $this->filteredMode = ($this->hasArgument(self::FILTERED_OPTION, $arguments) || self::envFlagEnabled(self::ENV_FILTERED) || $watchPatterns->isFiltered())
             && ! $this->hasExplicitPathArgument($arguments);
         $freshRequested = $this->hasArgument(self::FRESH_OPTION, $arguments);
         $this->forceRefetch = $this->hasArgument(self::REFETCH_OPTION, $arguments);
diff --git a/src/Plugins/Tia/Fingerprint.php b/src/Plugins/Tia/Fingerprint.php
index 1d78d85c..3be4b8f3 100644
--- a/src/Plugins/Tia/Fingerprint.php
+++ b/src/Plugins/Tia/Fingerprint.php
@@ -9,12 +9,12 @@ namespace Pest\Plugins\Tia;
  */
 final readonly class Fingerprint
 {
-    private const int SCHEMA_VERSION = 14;
+    private const int SCHEMA_VERSION = 15;
 
     /**
      * @return array{
      *     structural: array<string, int|string|null>,
-     *     environmental: array<string, string|null>,
+     *     environmental: array<string, int|string|null>,
      * }
      */
     public static function compute(string $projectRoot): array
@@ -22,6 +22,7 @@ final readonly class Fingerprint
         return [
             'structural' => [
                 'schema' => self::SCHEMA_VERSION,
+                'composer_lock' => self::composerLockHash($projectRoot),
                 'phpunit_xml' => self::hashIfExists($projectRoot.'/phpunit.xml'),
                 'phpunit_xml_dist' => self::hashIfExists($projectRoot.'/phpunit.xml.dist'),
                 'pest_factory' => self::contentHashOrNull(__DIR__.'/../../Factories/TestCaseFactory.php'),
@@ -33,6 +34,10 @@ final readonly class Fingerprint
                 'composer_json' => self::composerJsonHash($projectRoot),
             ],
             'environmental' => [
+                'php_minor' => PHP_MAJOR_VERSION,
+
+                // 'extensions' => self::extensionsFingerprint($projectRoot),
+                // 'env_files' => self::envFilesHash($projectRoot),
             ],
         ];
     }
@@ -226,6 +231,11 @@ final readonly class Fingerprint
         return $json === false ? null : hash('xxh128', $json);
     }
 
+    private static function composerLockHash(string $projectRoot): ?string
+    {
+        return self::hashIfExists($projectRoot.'/composer.lock');
+    }
+
     private static function packageLockHash(string $projectRoot): ?string
     {
         $parts = [];