diff --git a/CHANGELOG.md b/CHANGELOG.md
index 601908d..baabc70 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All Notable changes to `sebastiaanluca/laravel-boolean-dates` will be documented
 
 Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
 
+## 6.0.1 (2022-03-17)
+
+### Fixed
+
+- Fixed attribute getter value type hint
+
 ## 6.0.0 (2022-03-13)
 
 ⚠️ This release is a complete rewrite and changes the way it has to be used. Please consult the [README](README.md) for instructions.
diff --git a/src/BooleanDateAttribute.php b/src/BooleanDateAttribute.php
index 3ad1847..b25238b 100644
--- a/src/BooleanDateAttribute.php
+++ b/src/BooleanDateAttribute.php
@@ -12,12 +12,12 @@ class BooleanDateAttribute extends Attribute
     public static function for(string $column): static
     {
         return parent::make(
-            get: static fn (?string $value, array $attributes): bool => static::getBooleanDate($value, $attributes, $column),
+            get: static fn (mixed $value, array $attributes): bool => static::getBooleanDate($attributes, $column),
             set: static fn (mixed $value, array $attributes): array => static::setBooleanDate($value, $attributes, $column),
         );
     }
 
-    private static function getBooleanDate(mixed $value, array $attributes, string $column): bool
+    private static function getBooleanDate(array $attributes, string $column): bool
     {
         return array_key_exists($column, $attributes) && $attributes[$column] !== null;
     }