diff --git a/src/neo4j_graphrag/llm/anthropic_llm.py b/src/neo4j_graphrag/llm/anthropic_llm.py
index 04d6555e..614c5b9c 100644
--- a/src/neo4j_graphrag/llm/anthropic_llm.py
+++ b/src/neo4j_graphrag/llm/anthropic_llm.py
@@ -13,7 +13,7 @@
 #  limitations under the License.
 from __future__ import annotations
 
-from typing import Any, Iterable, Optional, TYPE_CHECKING, cast
+from typing import TYPE_CHECKING, Any, Iterable, Optional, cast
 
 from pydantic import ValidationError
 
diff --git a/src/neo4j_graphrag/llm/cohere_llm.py b/src/neo4j_graphrag/llm/cohere_llm.py
index 63e54aaa..024d578a 100644
--- a/src/neo4j_graphrag/llm/cohere_llm.py
+++ b/src/neo4j_graphrag/llm/cohere_llm.py
@@ -15,6 +15,7 @@
 from __future__ import annotations
 
 from typing import TYPE_CHECKING, Any, Iterable, Optional, cast
+
 from pydantic import ValidationError
 
 from neo4j_graphrag.exceptions import LLMGenerationError
diff --git a/src/neo4j_graphrag/llm/mistralai_llm.py b/src/neo4j_graphrag/llm/mistralai_llm.py
index a3c84759..761b9a62 100644
--- a/src/neo4j_graphrag/llm/mistralai_llm.py
+++ b/src/neo4j_graphrag/llm/mistralai_llm.py
@@ -16,6 +16,7 @@
 
 import os
 from typing import Any, Iterable, Optional, cast
+
 from pydantic import ValidationError
 
 from neo4j_graphrag.exceptions import LLMGenerationError
@@ -30,7 +31,7 @@
 )
 
 try:
-    from mistralai import Mistral, Messages
+    from mistralai import Messages, Mistral
     from mistralai.models.sdkerror import SDKError
 except ImportError:
     Mistral = None  # type: ignore
diff --git a/src/neo4j_graphrag/llm/ollama_llm.py b/src/neo4j_graphrag/llm/ollama_llm.py
index a36d34f9..08dfa655 100644
--- a/src/neo4j_graphrag/llm/ollama_llm.py
+++ b/src/neo4j_graphrag/llm/ollama_llm.py
@@ -13,7 +13,8 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 from __future__ import annotations
-from typing import Any, Iterable, Optional, Sequence, TYPE_CHECKING, cast
+
+from typing import TYPE_CHECKING, Any, Iterable, Optional, Sequence, cast
 
 from pydantic import ValidationError
 
@@ -24,9 +25,9 @@
     BaseMessage,
     LLMMessage,
     LLMResponse,
+    MessageList,
     SystemMessage,
     UserMessage,
-    MessageList,
 )
 
 if TYPE_CHECKING:
diff --git a/src/neo4j_graphrag/llm/openai_llm.py b/src/neo4j_graphrag/llm/openai_llm.py
index b3d99411..353dd19d 100644
--- a/src/neo4j_graphrag/llm/openai_llm.py
+++ b/src/neo4j_graphrag/llm/openai_llm.py
@@ -25,9 +25,9 @@
     BaseMessage,
     LLMMessage,
     LLMResponse,
+    MessageList,
     SystemMessage,
     UserMessage,
-    MessageList,
 )
 
 if TYPE_CHECKING:
diff --git a/src/neo4j_graphrag/llm/types.py b/src/neo4j_graphrag/llm/types.py
index 77e89aef..2d293e93 100644
--- a/src/neo4j_graphrag/llm/types.py
+++ b/src/neo4j_graphrag/llm/types.py
@@ -1,6 +1,7 @@
-from pydantic import BaseModel
 from typing import Literal, TypedDict
 
+from pydantic import BaseModel
+
 
 class LLMResponse(BaseModel):
     content: str
diff --git a/src/neo4j_graphrag/llm/vertexai_llm.py b/src/neo4j_graphrag/llm/vertexai_llm.py
index 48acfc9f..f2cbe26a 100644
--- a/src/neo4j_graphrag/llm/vertexai_llm.py
+++ b/src/neo4j_graphrag/llm/vertexai_llm.py
@@ -23,10 +23,10 @@
 
 try:
     from vertexai.generative_models import (
+        Content,
         GenerativeModel,
-        ResponseValidationError,
         Part,
-        Content,
+        ResponseValidationError,
     )
 except ImportError:
     GenerativeModel = None
diff --git a/tests/e2e/test_simplekgpipeline_e2e.py b/tests/e2e/test_simplekgpipeline_e2e.py
index 6b5ec04f..fad595b0 100644
--- a/tests/e2e/test_simplekgpipeline_e2e.py
+++ b/tests/e2e/test_simplekgpipeline_e2e.py
@@ -111,7 +111,6 @@ async def test_pipeline_builder_happy_path(
     await kg_builder_text.run_async(text=harry_potter_text)
 
 
-
 @pytest.mark.asyncio
 @pytest.mark.usefixtures("setup_neo4j_for_kg_construction")
 async def test_pipeline_builder_two_documents(
diff --git a/tests/unit/llm/test_anthropic_llm.py b/tests/unit/llm/test_anthropic_llm.py
index fc8d2756..b1d583f6 100644
--- a/tests/unit/llm/test_anthropic_llm.py
+++ b/tests/unit/llm/test_anthropic_llm.py
@@ -18,7 +18,6 @@
 from unittest.mock import AsyncMock, MagicMock, Mock, patch
 
 import anthropic
-
 import pytest
 from neo4j_graphrag.exceptions import LLMGenerationError
 from neo4j_graphrag.llm.anthropic_llm import AnthropicLLM