diff --git a/src/pydase/server/server.py b/src/pydase/server/server.py
index 7046603..55fcbd5 100644
--- a/src/pydase/server/server.py
+++ b/src/pydase/server/server.py
@@ -311,8 +311,11 @@ class Server:
                     get_nested_dict_by_path(self._state_manager.cache, full_access_path)
                 )
                 serialized_value = dump(value)
+
+                if cached_value_dict["type"] != "method":
+                    cached_value_dict["type"] = serialized_value["type"]
+
                 cached_value_dict["value"] = serialized_value["value"]
-                cached_value_dict["type"] = serialized_value["type"]
 
                 async def notify() -> None:
                     try:
diff --git a/src/pydase/utils/serializer.py b/src/pydase/utils/serializer.py
index ece26c4..d217718 100644
--- a/src/pydase/utils/serializer.py
+++ b/src/pydase/utils/serializer.py
@@ -259,8 +259,9 @@ def set_nested_value_by_path(
     # setting the new value
     serialized_value = dump(value)
     if "readonly" in current_dict:
+        if current_dict["type"] != "method":
+            current_dict["type"] = serialized_value["type"]
         current_dict["value"] = serialized_value["value"]
-        current_dict["type"] = serialized_value["type"]
     else:
         current_dict.update(serialized_value)
 
diff --git a/tests/data_service/test_data_service_cache.py b/tests/data_service/test_data_service_cache.py
index 35dd400..d457b2d 100644
--- a/tests/data_service/test_data_service_cache.py
+++ b/tests/data_service/test_data_service_cache.py
@@ -23,3 +23,20 @@ def test_nested_attributes_cache_callback() -> None:
 
     test_service.class_attr.name = "Ciao"
     assert get_nested_dict_by_path(cache.cache, "class_attr.name")["value"] == "Ciao"
+
+
+def test_task_status_update() -> None:
+    class ServiceClass(pydase.DataService):
+        name = "World"
+
+        async def my_method(self) -> None:
+            pass
+
+    test_service = ServiceClass()
+    cache = DataServiceCache(test_service)
+    assert get_nested_dict_by_path(cache.cache, "my_method")["type"] == "method"
+    assert get_nested_dict_by_path(cache.cache, "my_method")["value"] is None
+
+    test_service.start_my_method()  # type: ignore
+    assert get_nested_dict_by_path(cache.cache, "my_method")["type"] == "method"
+    assert get_nested_dict_by_path(cache.cache, "my_method")["value"] == {}