diff --git a/pymisp/api.py b/pymisp/api.py
index 0824050..ef135c6 100644
--- a/pymisp/api.py
+++ b/pymisp/api.py
@@ -454,14 +454,18 @@ class PyMISP:
         o.from_dict(**updated_object)
         return o
 
-    def delete_object(self, misp_object: Union[MISPObject, int, str, UUID]) -> Dict:
+    def delete_object(self, misp_object: Union[MISPObject, int, str, UUID], hard: bool = False) -> Dict:
         """Delete an object from a MISP instance
 
         :param misp_object: object to delete
+        :param hard: flag for hard delete
         """
         object_id = get_uuid_or_id_from_abstract_misp(misp_object)
-        response = self._prepare_request('POST', f'objects/delete/{object_id}')
-        return self._check_json_response(response)
+        data = {}
+        if hard:
+            data['hard'] = 1
+        r = self._prepare_request('POST', f'objects/delete/{object_id}', data=data)
+        return self._check_json_response(r)
 
     def add_object_reference(self, misp_object_reference: MISPObjectReference, pythonify: bool = False) -> Union[Dict, MISPObjectReference]:
         """Add a reference to an object
diff --git a/tests/testlive_comprehensive.py b/tests/testlive_comprehensive.py
index 11b48ce..8108828 100644
--- a/tests/testlive_comprehensive.py
+++ b/tests/testlive_comprehensive.py
@@ -1244,7 +1244,14 @@ class TestComprehensive(unittest.TestCase):
 
             # Test delete object
             r = self.user_misp_connector.delete_object(second.objects[0])
-            self.assertEqual(r['message'], 'Object deleted')
+            self.assertEqual(r['message'], 'Object deleted', r)
+            new_second = self.admin_misp_connector.get_event(second, deleted=[0, 1], pythonify=True)
+            self.assertEqual(len(new_second.objects), 1)
+            # Hard delete
+            response = self.admin_misp_connector.delete_object(second.objects[0], hard=True)
+            self.assertEqual(response['message'], 'Object deleted')
+            new_second = self.admin_misp_connector.get_event(second, deleted=[0, 1], pythonify=True)
+            self.assertEqual(len(new_second.objects), 0)
         finally:
             # Delete event
             self.admin_misp_connector.delete_event(first)