diff --git a/api/db/services/llm_service.py b/api/db/services/llm_service.py
index 5a61e4ed2..039d45936 100644
--- a/api/db/services/llm_service.py
+++ b/api/db/services/llm_service.py
@@ -224,7 +224,7 @@ class TenantLLMService(CommonService):
         return list(objs)
 
 
-class LLMBundle(object):
+class LLMBundle:
     def __init__(self, tenant_id, llm_type, llm_name=None, lang="Chinese"):
         self.tenant_id = tenant_id
         self.llm_type = llm_type
diff --git a/deepdoc/parser/pdf_parser.py b/deepdoc/parser/pdf_parser.py
index 8a75ba657..30a30f580 100644
--- a/deepdoc/parser/pdf_parser.py
+++ b/deepdoc/parser/pdf_parser.py
@@ -1170,7 +1170,7 @@ class RAGFlowPdfParser:
         return poss
 
 
-class PlainParser(object):
+class PlainParser:
     def __call__(self, filename, from_page=0, to_page=100000, **kwargs):
         self.outlines = []
         lines = []
diff --git a/deepdoc/parser/ppt_parser.py b/deepdoc/parser/ppt_parser.py
index 4e459d193..25e8f8463 100644
--- a/deepdoc/parser/ppt_parser.py
+++ b/deepdoc/parser/ppt_parser.py
@@ -19,7 +19,7 @@ from io import BytesIO
 from pptx import Presentation
 
 
-class RAGFlowPptParser(object):
+class RAGFlowPptParser:
     def __init__(self):
         super().__init__()
 
diff --git a/deepdoc/vision/ocr.py b/deepdoc/vision/ocr.py
index 4836f0339..87ba2b669 100644
--- a/deepdoc/vision/ocr.py
+++ b/deepdoc/vision/ocr.py
@@ -122,7 +122,7 @@ def load_model(model_dir, nm):
     return loaded_model
 
 
-class TextRecognizer(object):
+class TextRecognizer:
     def __init__(self, model_dir):
         self.rec_image_shape = [int(v) for v in "3, 48, 320".split(",")]
         self.rec_batch_num = 16
@@ -393,7 +393,7 @@ class TextRecognizer(object):
         return rec_res, time.time() - st
 
 
-class TextDetector(object):
+class TextDetector:
     def __init__(self, model_dir):
         pre_process_list = [{
             'DetResizeForTest': {
@@ -506,7 +506,7 @@ class TextDetector(object):
         return dt_boxes, time.time() - st
 
 
-class OCR(object):
+class OCR:
     def __init__(self, model_dir=None):
         """
         If you have trouble downloading HuggingFace models, -_^ this might help!!
diff --git a/deepdoc/vision/operators.py b/deepdoc/vision/operators.py
index a2ad17142..4bee446b1 100644
--- a/deepdoc/vision/operators.py
+++ b/deepdoc/vision/operators.py
@@ -23,7 +23,7 @@ import math
 from PIL import Image
 
 
-class DecodeImage(object):
+class DecodeImage:
     """ decode image """
 
     def __init__(self,
@@ -65,7 +65,7 @@ class DecodeImage(object):
         return data
 
 
-class StandardizeImage(object):
+class StandardizeImag:
     """normalize image
     Args:
         mean (list): im - mean
@@ -102,7 +102,7 @@ class StandardizeImage(object):
         return im, im_info
 
 
-class NormalizeImage(object):
+class NormalizeImage:
     """ normalize image such as subtract mean, divide std
     """
 
@@ -129,7 +129,7 @@ class NormalizeImage(object):
         return data
 
 
-class ToCHWImage(object):
+class ToCHWImage:
     """ convert hwc image to chw image
     """
 
@@ -145,7 +145,7 @@ class ToCHWImage(object):
         return data
 
 
-class KeepKeys(object):
+class KeepKeys:
     def __init__(self, keep_keys, **kwargs):
         self.keep_keys = keep_keys
 
@@ -156,7 +156,7 @@ class KeepKeys(object):
         return data_list
 
 
-class Pad(object):
+class Pad:
     def __init__(self, size=None, size_div=32, **kwargs):
         if size is not None and not isinstance(size, (int, list, tuple)):
             raise TypeError("Type of target_size is invalid. Now is {}".format(
@@ -194,7 +194,7 @@ class Pad(object):
         return data
 
 
-class LinearResize(object):
+class LinearResize:
     """resize image by target_size and max_size
     Args:
         target_size (int): the target size of image
@@ -261,7 +261,7 @@ class LinearResize(object):
         return im_scale_y, im_scale_x
 
 
-class Resize(object):
+class Resize:
     def __init__(self, size=(640, 640), **kwargs):
         self.size = size
 
@@ -291,7 +291,7 @@ class Resize(object):
         return data
 
 
-class DetResizeForTest(object):
+class DetResizeForTest:
     def __init__(self, **kwargs):
         super(DetResizeForTest, self).__init__()
         self.resize_type = 0
@@ -421,7 +421,7 @@ class DetResizeForTest(object):
         return img, [ratio_h, ratio_w]
 
 
-class E2EResizeForTest(object):
+class E2EResizeForTest:
     def __init__(self, **kwargs):
         super(E2EResizeForTest, self).__init__()
         self.max_side_len = kwargs['max_side_len']
@@ -489,7 +489,7 @@ class E2EResizeForTest(object):
         return im, (ratio_h, ratio_w)
 
 
-class KieResize(object):
+class KieResize:
     def __init__(self, **kwargs):
         super(KieResize, self).__init__()
         self.max_side, self.min_side = kwargs['img_scale'][0], kwargs[
@@ -539,7 +539,7 @@ class KieResize(object):
         return points
 
 
-class SRResize(object):
+class SRResize:
     def __init__(self,
                  imgH=32,
                  imgW=128,
@@ -576,7 +576,7 @@ class SRResize(object):
         return data
 
 
-class ResizeNormalize(object):
+class ResizeNormalize:
     def __init__(self, size, interpolation=Image.BICUBIC):
         self.size = size
         self.interpolation = interpolation
@@ -588,7 +588,7 @@ class ResizeNormalize(object):
         return img_numpy
 
 
-class GrayImageChannelFormat(object):
+class GrayImageChannelFormat:
     """
     format gray scale image's channel: (3,h,w) -> (1,h,w)
     Args:
@@ -612,7 +612,7 @@ class GrayImageChannelFormat(object):
         return data
 
 
-class Permute(object):
+class Permute:
     """permute image
     Args:
         to_bgr (bool): whether convert RGB to BGR
@@ -635,7 +635,7 @@ class Permute(object):
         return im, im_info
 
 
-class PadStride(object):
+class PadStride:
     """ padding image for model with FPN, instead PadBatch(pad_to_stride) in original config
     Args:
         stride (bool): model with FPN need image shape % stride == 0
diff --git a/deepdoc/vision/postprocess.py b/deepdoc/vision/postprocess.py
index 27916cf45..a61464382 100644
--- a/deepdoc/vision/postprocess.py
+++ b/deepdoc/vision/postprocess.py
@@ -38,7 +38,7 @@ def build_post_process(config, global_config=None):
     return module_class(**config)
 
 
-class DBPostProcess(object):
+class DBPostProcess:
     """
     The post process for Differentiable Binarization (DB).
     """
@@ -259,7 +259,7 @@ class DBPostProcess(object):
         return boxes_batch
 
 
-class BaseRecLabelDecode(object):
+class BaseRecLabelDecode:
     """ Convert between text-label and text-index """
 
     def __init__(self, character_dict_path=None, use_space_char=False):
diff --git a/deepdoc/vision/recognizer.py b/deepdoc/vision/recognizer.py
index b3918ec7e..1052350b8 100644
--- a/deepdoc/vision/recognizer.py
+++ b/deepdoc/vision/recognizer.py
@@ -28,7 +28,7 @@ from .operators import preprocess
 from . import operators
 from .ocr import load_model
 
-class Recognizer(object):
+class Recognizer:
     def __init__(self, label_list, task_name, model_dir=None):
         """
         If you have trouble downloading HuggingFace models, -_^ this might help!!
diff --git a/rag/utils/azure_sas_conn.py b/rag/utils/azure_sas_conn.py
index 48f9d0a64..d1737546b 100644
--- a/rag/utils/azure_sas_conn.py
+++ b/rag/utils/azure_sas_conn.py
@@ -24,7 +24,7 @@ from azure.storage.blob import ContainerClient
 
 
 @singleton
-class RAGFlowAzureSasBlob(object):
+class RAGFlowAzureSasBlob:
     def __init__(self):
         self.conn = None
         self.container_url = os.getenv('CONTAINER_URL', settings.AZURE["container_url"])
diff --git a/rag/utils/azure_spn_conn.py b/rag/utils/azure_spn_conn.py
index 625ccc4b5..4b6b861f4 100644
--- a/rag/utils/azure_spn_conn.py
+++ b/rag/utils/azure_spn_conn.py
@@ -24,7 +24,7 @@ from azure.storage.filedatalake import FileSystemClient
 
 
 @singleton
-class RAGFlowAzureSpnBlob(object):
+class RAGFlowAzureSpnBlob:
     def __init__(self):
         self.conn = None
         self.account_url = os.getenv('ACCOUNT_URL', settings.AZURE["account_url"])
diff --git a/rag/utils/minio_conn.py b/rag/utils/minio_conn.py
index 48f02b699..60707f4fc 100644
--- a/rag/utils/minio_conn.py
+++ b/rag/utils/minio_conn.py
@@ -24,7 +24,7 @@ from rag.utils import singleton
 
 
 @singleton
-class RAGFlowMinio(object):
+class RAGFlowMinio:
     def __init__(self):
         self.conn = None
         self.__open__()
diff --git a/rag/utils/oss_conn.py b/rag/utils/oss_conn.py
index 298c1a5b8..a88eb9d18 100644
--- a/rag/utils/oss_conn.py
+++ b/rag/utils/oss_conn.py
@@ -24,7 +24,7 @@ from rag import settings
 
 
 @singleton
-class RAGFlowOSS(object):
+class RAGFlowOSS:
     def __init__(self):
         self.conn = None
         self.oss_config = settings.OSS
diff --git a/rag/utils/s3_conn.py b/rag/utils/s3_conn.py
index d1e7e7269..0318572e7 100644
--- a/rag/utils/s3_conn.py
+++ b/rag/utils/s3_conn.py
@@ -23,7 +23,7 @@ from rag.utils import singleton
 from rag import settings
 
 @singleton
-class RAGFlowS3(object):
+class RAGFlowS3:
     def __init__(self):
         self.conn = None
         self.s3_config = settings.S3
diff --git a/sdk/python/ragflow_sdk/modules/base.py b/sdk/python/ragflow_sdk/modules/base.py
index 5a6264f79..9014dd02d 100644
--- a/sdk/python/ragflow_sdk/modules/base.py
+++ b/sdk/python/ragflow_sdk/modules/base.py
@@ -14,7 +14,7 @@
 #  limitations under the License.
 #
 
-class Base(object):
+class Base:
     def __init__(self, rag, res_dict):
         self.rag = rag
         for k, v in res_dict.items():