diff --git a/src/Constant/GettypeResult.php b/src/Constant/GettypeResult.php
index 1efd34918..ad5ec397c 100644
--- a/src/Constant/GettypeResult.php
+++ b/src/Constant/GettypeResult.php
@@ -9,7 +9,7 @@
  *
  * @link https://www.php.net/manual/en/function.gettype.php
  */
-class GettypeResult
+final class GettypeResult
 {
     /**
      *  Define the php type as `array`.
diff --git a/src/Constant/PhpType.php b/src/Constant/PhpType.php
index 560da3725..3825d2c7a 100644
--- a/src/Constant/PhpType.php
+++ b/src/Constant/PhpType.php
@@ -13,7 +13,7 @@
  * @see ColumnSchemaInterface::getPhpType()
  * @see https://www.php.net/manual/en/language.types.type-system.php
  */
-class PhpType
+final class PhpType
 {
     /**
      * Define the php type as `array`.
diff --git a/src/Schema/Column/ColumnSchemaInterface.php b/src/Schema/Column/ColumnSchemaInterface.php
index 8a98cfd64..b1d9e2af5 100644
--- a/src/Schema/Column/ColumnSchemaInterface.php
+++ b/src/Schema/Column/ColumnSchemaInterface.php
@@ -184,6 +184,7 @@ public function getPrecision(): int|null;
      * Returns the PHP type of the column. Used for generating properties of a related model class.
      *
      * @return string The PHP type of the column.
+     * @psalm-return PhpType::*     
      *
      * @see PhpType
      */