diff --git a/ci/rector/config.php b/ci/rector/config.php
index 16385bca..2b226a13 100644
--- a/ci/rector/config.php
+++ b/ci/rector/config.php
@@ -6,6 +6,7 @@
 use Rector\Config\RectorConfig;
 use Rector\Doctrine\Set\DoctrineSetList;
 use Rector\Naming\Rector\Class_\RenamePropertyToMatchTypeRector;
+use Rector\PHPUnit\CodeQuality\Rector\Class_\PreferPHPUnitThisCallRector;
 use Rector\Set\ValueObject\LevelSetList;
 use Rector\Set\ValueObject\SetList;
 
@@ -38,6 +39,9 @@
         DoctrineSetList::DOCTRINE_CODE_QUALITY,
         LevelSetList::UP_TO_PHP_81,
     ])
+    ->withRules([
+        PreferPHPUnitThisCallRector::class,
+    ])
     ->withSkip([
         RenamePropertyToMatchTypeRector::class,
         FlipTypeControlToUseExclusiveTypeRector::class => [
diff --git a/tests/Unit/MartinGeorgiev/Doctrine/DBAL/Types/BaseArrayTest.php b/tests/Unit/MartinGeorgiev/Doctrine/DBAL/Types/BaseArrayTest.php
index 75287254..66bf0b04 100644
--- a/tests/Unit/MartinGeorgiev/Doctrine/DBAL/Types/BaseArrayTest.php
+++ b/tests/Unit/MartinGeorgiev/Doctrine/DBAL/Types/BaseArrayTest.php
@@ -92,7 +92,7 @@ public function throws_domain_exception_when_invalid_array_item_value(): void
         $this->expectExceptionMessage("One or more of the items given doesn't look valid.");
 
         $this->fixture
-            ->expects(self::once())
+            ->expects($this->once())
             ->method('isValidArrayItemForDatabase')
             ->willReturn(false);
 
diff --git a/tests/Unit/MartinGeorgiev/Doctrine/DBAL/Types/BaseTypeTest.php b/tests/Unit/MartinGeorgiev/Doctrine/DBAL/Types/BaseTypeTest.php
index 16bd0b5e..6a6140fb 100644
--- a/tests/Unit/MartinGeorgiev/Doctrine/DBAL/Types/BaseTypeTest.php
+++ b/tests/Unit/MartinGeorgiev/Doctrine/DBAL/Types/BaseTypeTest.php
@@ -66,7 +66,7 @@ public function can_get_correct_sql_declaration(): void
         };
 
         $this->platform
-            ->expects(self::once())
+            ->expects($this->once())
             ->method('getDoctrineTypeMapping')
             ->with('custom_type')
             ->willReturn('CUSTOM_SQL_TYPE');