diff --git a/docs/auto-classification/add-support-for-another-entity.md b/docs/auto-classification/add-support-for-another-entity.md
index 00b65093a80f..fee61f0ca191 100644
--- a/docs/auto-classification/add-support-for-another-entity.md
+++ b/docs/auto-classification/add-support-for-another-entity.md
@@ -433,12 +433,11 @@ WHERE name = 'AutoClassificationBotPolicy';
 **Location:** `ingestion/src/metadata/pii/types.py`
 
 ```python
-from typing import Union
 from metadata.generated.schema.entity.data.container import Container
 from metadata.generated.schema.entity.data.table import Table
 from metadata.generated.schema.entity.data.topic import Topic  # Your new entity
 
-ClassifiableEntityType = Union[Table, Container, Topic]
+ClassifiableEntityType = Table | Container | Topic
 ```
 
 #### 3.2 Register Entity Adapter
@@ -504,7 +503,7 @@ class YourEntityFetcherStrategy(FetcherStrategy):
         self,
         config: OpenMetadataWorkflowConfig,
         metadata: OpenMetadata,
-        global_profiler_config: Optional[Settings],
+        global_profiler_config: Settings | None,
         status: Status,
     ) -> None:
         super().__init__(config, metadata, global_profiler_config, status)
diff --git a/skills/connector-building/references/connection-type-guide.md b/skills/connector-building/references/connection-type-guide.md
index a5239df33976..9139a5840441 100644
--- a/skills/connector-building/references/connection-type-guide.md
+++ b/skills/connector-building/references/connection-type-guide.md
@@ -52,7 +52,7 @@ Add the `MultiDBSource` mixin when a single server connection can access multipl
 
 ```python
 class MyDbSource(CommonDbSourceService, MultiDBSource):
-    def get_configured_database(self) -> Optional[str]:
+    def get_configured_database(self) -> str | None:
         return self.service_connection.databaseName
 
     def get_database_names_raw(self) -> Iterable[str]:
diff --git a/skills/standards/code_style.md b/skills/standards/code_style.md
index 1da0e24ea17a..bb09aedfed66 100644
--- a/skills/standards/code_style.md
+++ b/skills/standards/code_style.md
@@ -8,8 +8,8 @@ Order: stdlib → third-party → OpenMetadata generated → OpenMetadata intern
 ```python
 import json
 import traceback
+from collections.abc import Iterable
 from functools import partial
-from typing import Iterable, Optional
 
 import requests
 from sqlalchemy.engine import Engine
@@ -30,7 +30,7 @@ from metadata.utils.logger import ingestion_logger
 
 ### Type Annotations
 - All function signatures must have type annotations
-- Use `Optional[T]` for nullable fields
+- Use `T | None` for nullable fields
 - Use `Iterable[Either[...]]` for yield methods
 - Import types from `typing` or `collections.abc`
 
@@ -44,7 +44,7 @@ from metadata.utils.logger import ingestion_logger
 
 When defining Pydantic models for API responses with aliased fields:
 - Always set `model_config = ConfigDict(populate_by_name=True)` when using `Field(alias=...)` — without it, constructing instances with Python attribute names raises `ValidationError`
-- Use `Optional[T]` with `Field(None, alias=...)` for nullable fields
+- Use `T | None` with `Field(None, alias=...)` for nullable fields
 - Create list response wrapper models inheriting from a base OData/pagination response
 
 ```python
@@ -55,11 +55,11 @@ class MyApiReport(BaseModel):
 
     id: str = Field(alias="Id")
     name: str = Field(alias="Name")
-    description: Optional[str] = Field(None, alias="Description")
+    description: str | None = Field(None, alias="Description")
 
 
 class MyApiListResponse(BaseModel):
-    value: List[MyApiReport] = Field(default_factory=list)
+    value: list[MyApiReport] = Field(default_factory=list)
 ```
 
 ### Error Messages
diff --git a/skills/standards/memory.md b/skills/standards/memory.md
index 22d520ed086c..4e54adeeff4a 100644
--- a/skills/standards/memory.md
+++ b/skills/standards/memory.md
@@ -27,14 +27,16 @@ def read_config(self, path: str) -> dict:
 ```python
 MAX_METADATA_FILE_SIZE = 50 * 1024 * 1024  # 50 MB
 
-def read_metadata_file(self, path: str) -> Optional[dict]:
+def read_metadata_file(self, path: str) -> dict | None:
     """Read a metadata/manifest file with size guard."""
     head = self.client.head_object(Bucket=self.bucket, Key=path)
     size = head["ContentLength"]
     if size > MAX_METADATA_FILE_SIZE:
         logger.warning(
-            f"Skipping {path}: file size {size} exceeds limit "
-            f"{MAX_METADATA_FILE_SIZE}"
+            "Skipping %s: file size %s exceeds limit %s",
+            path,
+            size,
+            MAX_METADATA_FILE_SIZE,
         )
         return None
     response = self.client.get_object(Bucket=self.bucket, Key=path)
diff --git a/skills/standards/performance.md b/skills/standards/performance.md
index 226ad467126a..cb8523cabca0 100644
--- a/skills/standards/performance.md
+++ b/skills/standards/performance.md
@@ -191,7 +191,7 @@ def _get(self, endpoint):
     response = self._session.get(f"{self._base_url}{endpoint}")
     if response.status_code == 429:
         retry_after = int(response.headers.get("Retry-After", 30))
-        logger.warning(f"Rate limited, retrying after {retry_after}s")
+        logger.warning("Rate limited, retrying after %ss", retry_after)
         raise RateLimitError(retry_after)
     response.raise_for_status()
     return response.json()
diff --git a/skills/standards/sql.md b/skills/standards/sql.md
index 27c0c3c94437..bd08a63b6f00 100644
--- a/skills/standards/sql.md
+++ b/skills/standards/sql.md
@@ -139,7 +139,7 @@ Add `MultiDBSource` mixin when the database server hosts multiple independent da
 
 ```python
 class MyDbSource(CommonDbSourceService, MultiDBSource):
-    def get_configured_database(self) -> Optional[str]:
+    def get_configured_database(self) -> str | None:
         return self.service_connection.databaseName
 
     def get_database_names_raw(self) -> Iterable[str]: