diff --git a/src/Configuration.php b/src/Configuration.php
index fb4f45a4..4ca74d38 100644
--- a/src/Configuration.php
+++ b/src/Configuration.php
@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace Pest;
 
+use Pest\PendingCalls\BeforeEachCall;
 use Pest\PendingCalls\UsesCall;
 
 /**
@@ -24,7 +25,7 @@ final readonly class Configuration
     public function __construct(
         string $filename,
     ) {
-        $this->filename = str_ends_with($filename, DIRECTORY_SEPARATOR.'Pest.php') ? dirname($filename) : $filename;
+        $this->filename = str_ends_with($filename, DIRECTORY_SEPARATOR . 'Pest.php') ? dirname($filename) : $filename;
     }
 
     /**
@@ -62,6 +63,14 @@ final readonly class Configuration
         return (new UsesCall($this->filename, []))->group(...$groups);
     }
 
+    /**
+     * Marks all tests in the current file to be run exclusively.
+     */
+    public function only(): void
+    {
+        (new BeforeEachCall(TestSuite::getInstance(), $this->filename))->only();
+    }
+
     /**
      * Depending on where is called, it will extend the given classes and traits globally or locally.
      */