diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a15c1bd..0458191e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Mindee Python Client Library Changelog
 
+## v4.28.1 - 2025-09-03
+### Fixes
+* :bug: inference options should default to None
+
+
 ## v4.28.0 - 2025-09-02
 ### Changes
 * :sparkles: add list field typed accessors
diff --git a/docs/extras/code_samples/default_v2.txt b/docs/extras/code_samples/default_v2.txt
index bb0a3cd5..1e3abd18 100644
--- a/docs/extras/code_samples/default_v2.txt
+++ b/docs/extras/code_samples/default_v2.txt
@@ -11,8 +11,18 @@ mindee_client = ClientV2(api_key)
 params = InferenceParameters(
     # ID of the model, required.
     model_id=model_id,
-    # If set to `True`, will enable Retrieval-Augmented Generation.
-    rag=False,
+
+    # Options: set to `True` or `False` to override defaults
+
+    # Enhance extraction accuracy with Retrieval-Augmented Generation.
+    rag=None,
+    # Extract the full text content from the document as strings.
+    raw_text=None,
+    # Calculate bounding box polygons for all fields.
+    polygon=None,
+    # Boost the precision and accuracy of all extractions.
+    # Calculate confidence scores for all fields.
+    confidence=None,
 )
 
 # Load a file from disk
diff --git a/mindee/versions.py b/mindee/versions.py
index 9a0f4d37..c6f4156e 100644
--- a/mindee/versions.py
+++ b/mindee/versions.py
@@ -1,6 +1,6 @@
 import sys
 
-__version__ = "4.28.0"
+__version__ = "4.28.1"
 
 PYTHON_VERSION = f"{sys.version_info[0]}.{sys.version_info[1]}"
 
diff --git a/tests/test_client_v2_integration.py b/tests/test_client_v2_integration.py
index 82525289..746b85c1 100644
--- a/tests/test_client_v2_integration.py
+++ b/tests/test_client_v2_integration.py
@@ -118,6 +118,10 @@ def test_parse_file_filled_single_page_must_succeed(
     params = InferenceParameters(
         model_id=findoc_model_id,
         webhook_ids=[],
+        rag=None,
+        raw_text=None,
+        polygon=None,
+        confidence=None,
         alias="py_integration_filled_single",
     )