diff --git a/fastembed/common/onnx_model.py b/fastembed/common/onnx_model.py
index 859416ec..5d26e55a 100644
--- a/fastembed/common/onnx_model.py
+++ b/fastembed/common/onnx_model.py
@@ -1,17 +1,7 @@
 import warnings
 from dataclasses import dataclass
 from pathlib import Path
-from typing import (
-    Any,
-    Dict,
-    Generic,
-    Iterable,
-    Optional,
-    Sequence,
-    Tuple,
-    Type,
-    TypeVar,
-)
+from typing import Any, Dict, Generic, Iterable, Optional, Sequence, Tuple, Type, TypeVar
 
 import numpy as np
 import onnxruntime as ort
diff --git a/fastembed/late_interaction/colbert.py b/fastembed/late_interaction/colbert.py
index 1a2fbcd2..52fb79e7 100644
--- a/fastembed/late_interaction/colbert.py
+++ b/fastembed/late_interaction/colbert.py
@@ -68,14 +68,14 @@ def _post_process_onnx_output(
         return output.model_output.astype(np.float32)
 
     def _preprocess_onnx_input(
-        self, onnx_input: Dict[str, np.ndarray], is_doc: bool = True
+        self, onnx_input: Dict[str, np.ndarray], is_doc: bool = True, **kwargs: Any
     ) -> Dict[str, np.ndarray]:
         marker_token = self.DOCUMENT_MARKER_TOKEN_ID if is_doc else self.QUERY_MARKER_TOKEN_ID
         onnx_input["input_ids"] = np.insert(onnx_input["input_ids"], 1, marker_token, axis=1)
         onnx_input["attention_mask"] = np.insert(onnx_input["attention_mask"], 1, 1, axis=1)
         return onnx_input
 
-    def tokenize(self, documents: List[str], is_doc: bool = True) -> List[Encoding]:
+    def tokenize(self, documents: List[str], is_doc: bool = True, **kwargs: Any) -> List[Encoding]:
         return (
             self._tokenize_documents(documents=documents)
             if is_doc
@@ -226,7 +226,7 @@ def embed(
             **kwargs,
         )
 
-    def query_embed(self, query: Union[str, List[str]], **kwargs) -> Iterable[np.ndarray]:
+    def query_embed(self, query: Union[str, Iterable[str]], **kwargs) -> Iterable[np.ndarray]:
         if isinstance(query, str):
             query = [query]
 
diff --git a/fastembed/late_interaction/jina_colbert.py b/fastembed/late_interaction/jina_colbert.py
index 9f7c4b32..4d62ca8f 100644
--- a/fastembed/late_interaction/jina_colbert.py
+++ b/fastembed/late_interaction/jina_colbert.py
@@ -42,7 +42,7 @@ def list_supported_models(cls) -> List[Dict[str, Any]]:
         return supported_jina_colbert_models
 
     def _preprocess_onnx_input(
-        self, onnx_input: Dict[str, np.ndarray], is_doc: bool = True
+        self, onnx_input: Dict[str, np.ndarray], is_doc: bool = True, **kwargs: Any
     ) -> Dict[str, np.ndarray]:
         onnx_input = super()._preprocess_onnx_input(onnx_input, is_doc)
 
diff --git a/fastembed/parallel_processor.py b/fastembed/parallel_processor.py
index 386b0d3e..93245ae8 100644
--- a/fastembed/parallel_processor.py
+++ b/fastembed/parallel_processor.py
@@ -24,7 +24,7 @@ class QueueSignals(str, Enum):
 
 class Worker:
     @classmethod
-    def start(cls, **kwargs: Any) -> "Worker":
+    def start(cls, *args: Any, **kwargs: Any) -> "Worker":
         raise NotImplementedError()
 
     def process(self, items: Iterable[Tuple[int, Any]]) -> Iterable[Tuple[int, Any]]:
diff --git a/fastembed/rerank/cross_encoder/onnx_text_model.py b/fastembed/rerank/cross_encoder/onnx_text_model.py
index 85f9420c..b1a30e2e 100644
--- a/fastembed/rerank/cross_encoder/onnx_text_model.py
+++ b/fastembed/rerank/cross_encoder/onnx_text_model.py
@@ -4,7 +4,7 @@
 import numpy as np
 from tokenizers import Encoding
 
-from fastembed.common.onnx_model import OnnxModel, OnnxProvider
+from fastembed.common.onnx_model import OnnxModel, OnnxProvider, OnnxOutputContext
 from fastembed.common.preprocessor_utils import load_tokenizer
 from fastembed.common.utils import iter_batch
 
@@ -34,7 +34,7 @@ def _load_onnx_model(
     def tokenize(self, query: str, documents: List[str], **kwargs) -> List[Encoding]:
         return self.tokenizer.encode_batch([(query, doc) for doc in documents])
 
-    def onnx_embed(self, query: str, documents: List[str], **kwargs) -> List[float]:
+    def onnx_embed(self, query: str, documents: List[str], **kwargs) -> OnnxOutputContext:
         tokenized_input = self.tokenize(query, documents, **kwargs)
 
         inputs = {
@@ -51,7 +51,7 @@ def onnx_embed(self, query: str, documents: List[str], **kwargs) -> List[float]:
 
         onnx_input = self._preprocess_onnx_input(inputs, **kwargs)
         outputs = self.model.run(self.ONNX_OUTPUT_NAMES, onnx_input)
-        return outputs[0][:, 0].tolist()
+        return OnnxOutputContext(model_output=outputs[0][:, 0].tolist())
 
     def _rerank_documents(
         self, query: str, documents: Iterable[str], batch_size: int, **kwargs
@@ -59,7 +59,7 @@ def _rerank_documents(
         if not hasattr(self, "model") or self.model is None:
             self.load_onnx_model()
         for batch in iter_batch(documents, batch_size):
-            yield from self.onnx_embed(query, batch, **kwargs)
+            yield from self.onnx_embed(query, batch, **kwargs).model_output
 
     def _preprocess_onnx_input(
         self, onnx_input: Dict[str, np.ndarray], **kwargs
diff --git a/fastembed/sparse/utils/tokenizer.py b/fastembed/sparse/utils/tokenizer.py
index 88b6c059..22045759 100644
--- a/fastembed/sparse/utils/tokenizer.py
+++ b/fastembed/sparse/utils/tokenizer.py
@@ -5,6 +5,7 @@
 
 
 class SimpleTokenizer:
+    @staticmethod
     def tokenize(text: str) -> List[str]:
         text = re.sub(r"[^\w]", " ", text.lower())
         text = re.sub(r"\s+", " ", text)