diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4a02d08..047ec1a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 1.0.4
+
+* Added support for multi hash length
+
 ## 1.0.3
 
 * Moved all class variables to object variables
diff --git a/deduplicationdict/__init__.py b/deduplicationdict/__init__.py
index 6e5e394..7f87bd6 100644
--- a/deduplicationdict/__init__.py
+++ b/deduplicationdict/__init__.py
@@ -108,7 +108,12 @@ def __setitem__(self, key: KT, value: VT) -> None:
             del self[key]
 
         if isinstance(value, dict):
-            self.key_dict[key] = DeDuplicationDict(value, _value_dict=self.value_dict)
+            new_dd_dict = DeDuplicationDict(_value_dict=self.value_dict)
+            new_dd_dict.hash_length = self.hash_length
+            new_dd_dict.auto_clean_up = self.auto_clean_up
+            new_dd_dict.skip_update_on_setitem = self.skip_update_on_setitem
+            new_dd_dict.update(value)
+            self.key_dict[key] = new_dd_dict
         elif isinstance(value, DeDuplicationDict):
             self.key_dict[key] = value
             self.value_dict.update(value.value_dict)
diff --git a/pyproject.toml b/pyproject.toml
index 96a21ba..5189283 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ where = ["deduplicationdict"]
 [project]
 # $ pip install deduplicationdict
 name = "deduplicationdict"
-version = "1.0.3"
+version = "1.0.4"
 description = "A dictionary that de-duplicates values."
 readme = "README.md"
 requires-python = ">=3.7"
diff --git a/tests/test_main.py b/tests/test_main.py
index fecbe3a..66c3301 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -378,6 +378,25 @@ def test_deepcopy(self):
         self.assertNotEqual(id(dd_dict1), id(dd_dict2))
         self.assertEqual(len(diff), 0)
 
+    def test_multi_hash_length(self):
+        """Test the multi_hash_length method of the DeDuplicationDict class."""
+
+        data = get_json_test_data()
+        dd_dict = DeDuplicationDict({'a': 1, 'b': 2, 'c': 3})
+
+        for i in dd_dict.value_dict.keys():
+            self.assertEqual(len(i), 8)
+
+        dd_dict.hash_length = 32
+        dd_dict['data'] = data
+        self.assertEqual(dd_dict.hash_length, 32)
+        self.assertEqual(dd_dict['data'].hash_length, 32)
+        del dd_dict['a']
+        del dd_dict['b']
+        del dd_dict['c']
+        for i in dd_dict.value_dict.keys():
+            self.assertEqual(len(i), 32)
+
 
 if __name__ == '__main__':
     unittest.main()