diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9d0a76d..30d1d7f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,24 @@
 # Changelog
 
+## [v2.1.0](https://github.com/SebRut/pygrocy/tree/v2.1.0) (2024-04-23)
+
+**THIS IS WILL PROBABLY BE THE LAST pygrocy RELEASE, THE LIBRARY WILL GO INTO UNMAINTAINED STATE**
+
+[Full Changelog](https://github.com/SebRut/pygrocy/compare/v2.0.0...v2.1.0)
+
+**Closed issues:**
+
+- Add support for grocy api via reverse proxies [\#276](https://github.com/SebRut/pygrocy/issues/276)
+- getting error when running code [\#274](https://github.com/SebRut/pygrocy/issues/274)
+- Getting product by id fails if name\_plural is null [\#271](https://github.com/SebRut/pygrocy/issues/271)
+- Support for Grocy 4.0 API [\#266](https://github.com/SebRut/pygrocy/issues/266)
+
+**Merged pull requests:**
+
+- Add amount field to ProductBarcode [\#278](https://github.com/SebRut/pygrocy/pull/278) ([looching](https://github.com/looching))
+- use value prop in delete API call [\#273](https://github.com/SebRut/pygrocy/pull/273) ([jeremy-green](https://github.com/jeremy-green))
+- Make plural name optional for Quantity Units [\#272](https://github.com/SebRut/pygrocy/pull/272) ([vorostamas](https://github.com/vorostamas))
+
 ## [v2.0.0](https://github.com/SebRut/pygrocy/tree/v2.0.0) (2023-08-17)
 
 [Full Changelog](https://github.com/SebRut/pygrocy/compare/v1.5.0...v2.0.0)
diff --git a/README.md b/README.md
index 8d420ce..decfda4 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+**This project is de-facto unmaintained as haven't been using grocy for a while. Feel free to fork and create pygrocy2!**
+
 # pygrocy
 [![Development Build Status](https://api.travis-ci.com/SebRut/pygrocy.svg?branch=develop)](https://travis-ci.com/SebRut/pygrocy)
 [![PyPI](https://img.shields.io/pypi/v/pygrocy.svg)](https://pypi.org/project/pygrocy/)
diff --git a/pygrocy/data_models/product.py b/pygrocy/data_models/product.py
index 62bc500..a962b8f 100644
--- a/pygrocy/data_models/product.py
+++ b/pygrocy/data_models/product.py
@@ -1,5 +1,5 @@
 from datetime import datetime
-from typing import List
+from typing import List, Optional
 
 from pygrocy.base import DataModel
 from pygrocy.grocy_api_client import (
@@ -19,11 +19,16 @@
 class ProductBarcode(DataModel):
     def __init__(self, data: ProductBarcodeData):
         self._barcode = data.barcode
+        self._amount = float(data.amount) if data.amount else None
 
     @property
     def barcode(self) -> str:
         return self._barcode
 
+    @property
+    def amount(self) -> Optional[float]:
+        return self._amount
+
 
 class QuantityUnit(DataModel):
     def __init__(self, data: QuantityUnitData):
diff --git a/pygrocy/grocy.py b/pygrocy/grocy.py
index a7d9e6e..a1b3476 100644
--- a/pygrocy/grocy.py
+++ b/pygrocy/grocy.py
@@ -373,7 +373,7 @@ def update_generic(self, entity_type: EntityType, object_id: int, updated_data):
         )
 
     def delete_generic(self, entity_type: EntityType, object_id: int):
-        return self._api_client.delete_generic(entity_type, object_id)
+        return self._api_client.delete_generic(entity_type.value, object_id)
 
     def get_generic_objects_for_type(
         self, entity_type: EntityType, query_filters: List[str] = None
diff --git a/pygrocy/grocy_api_client.py b/pygrocy/grocy_api_client.py
index c8dc1cd..2bb7098 100644
--- a/pygrocy/grocy_api_client.py
+++ b/pygrocy/grocy_api_client.py
@@ -71,7 +71,7 @@ class RecipeDetailsResponse(BaseModel):
 class QuantityUnitData(BaseModel):
     id: int
     name: str
-    name_plural: str
+    name_plural: Optional[str] = None
     description: Optional[str] = None
     row_created_timestamp: datetime
 
@@ -161,6 +161,7 @@ class CurrentVolatilStockResponse(BaseModel):
 
 class ProductBarcodeData(BaseModel):
     barcode: str
+    amount: Optional[float] = None
 
 
 class ProductDetailsResponse(BaseModel):
diff --git a/setup.py b/setup.py
index b95e38b..29380d9 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name="pygrocy",
-    version="2.0.0",
+    version="2.1.0",
     author="Sebastian Rutofski",
     author_email="kontakt@sebastian-rutofski.de",
     description="",