diff --git a/src/Fgits/CarbonGermanHolidays/CarbonGermanHolidays.php b/src/Fgits/CarbonGermanHolidays/CarbonGermanHolidays.php
index 8b68e6b..a499df7 100644
--- a/src/Fgits/CarbonGermanHolidays/CarbonGermanHolidays.php
+++ b/src/Fgits/CarbonGermanHolidays/CarbonGermanHolidays.php
@@ -179,7 +179,7 @@ public static function getHolidays($year, $states = self::ALL_STATES)
             $holidays['Mariä Himmelfahrt'] = mktime(0, 0, 0, 8, 15, $year);
         }
 
-        if (array_intersect(array(self::BRANDENBURG, self::MECKLENBURG_VORPOMMERN, self::SACHSEN, self::SACHSEN_ANHALT, self::THUERINGEN), $states)) {
+        if (array_intersect(array(self::BRANDENBURG, self::MECKLENBURG_VORPOMMERN, self::SACHSEN, self::SACHSEN_ANHALT, self::THUERINGEN, self::NIEDERSACHSEN, self::HAMBURG, self::SCHLESWIG_HOLSTEIN, self::BREMEN), $states)) {
             $holidays['Reformationstag'] = mktime(0, 0, 0, 10, 31, $year);
         }