diff --git a/libs/partners/fireworks/langchain_fireworks/__init__.py b/libs/partners/fireworks/langchain_fireworks/__init__.py
index 02e1a5b4fb6..27fdaaee4c9 100644
--- a/libs/partners/fireworks/langchain_fireworks/__init__.py
+++ b/libs/partners/fireworks/langchain_fireworks/__init__.py
@@ -1,3 +1,5 @@
+"""Fireworks AI integration for LangChain."""
+
 from langchain_fireworks.chat_models import ChatFireworks
 from langchain_fireworks.embeddings import FireworksEmbeddings
 from langchain_fireworks.llms import Fireworks
diff --git a/libs/partners/huggingface/langchain_huggingface/__init__.py b/libs/partners/huggingface/langchain_huggingface/__init__.py
index 5eb67b1687b..a64efaa4812 100644
--- a/libs/partners/huggingface/langchain_huggingface/__init__.py
+++ b/libs/partners/huggingface/langchain_huggingface/__init__.py
@@ -1,3 +1,5 @@
+"""Hugging Face integration for LangChain."""
+
 from langchain_huggingface.chat_models import (
     ChatHuggingFace,  # type: ignore[import-not-found]
 )
diff --git a/libs/partners/mistralai/langchain_mistralai/__init__.py b/libs/partners/mistralai/langchain_mistralai/__init__.py
index 10a26e83fae..11fa44c371a 100644
--- a/libs/partners/mistralai/langchain_mistralai/__init__.py
+++ b/libs/partners/mistralai/langchain_mistralai/__init__.py
@@ -1,3 +1,5 @@
+"""Mistral AI integration for LangChain."""
+
 from langchain_mistralai.chat_models import ChatMistralAI
 from langchain_mistralai.embeddings import MistralAIEmbeddings
 
diff --git a/libs/partners/perplexity/langchain_perplexity/__init__.py b/libs/partners/perplexity/langchain_perplexity/__init__.py
index 48c45f197d9..5db46f6bc40 100644
--- a/libs/partners/perplexity/langchain_perplexity/__init__.py
+++ b/libs/partners/perplexity/langchain_perplexity/__init__.py
@@ -1,3 +1,5 @@
+"""Perplexity AI integration for LangChain."""
+
 from langchain_perplexity.chat_models import ChatPerplexity
 from langchain_perplexity.output_parsers import (
     ReasoningJsonOutputParser,
diff --git a/libs/partners/prompty/langchain_prompty/__init__.py b/libs/partners/prompty/langchain_prompty/__init__.py
index 88f08e16680..3c53f3fa49f 100644
--- a/libs/partners/prompty/langchain_prompty/__init__.py
+++ b/libs/partners/prompty/langchain_prompty/__init__.py
@@ -1,3 +1,5 @@
+"""Microsoft Prompty integration for LangChain."""
+
 from langchain_prompty.core import InvokerFactory
 from langchain_prompty.langchain import create_chat_prompt
 from langchain_prompty.parsers import PromptyChatParser
diff --git a/libs/partners/qdrant/langchain_qdrant/__init__.py b/libs/partners/qdrant/langchain_qdrant/__init__.py
index 1a3bf857404..1e54599ab18 100644
--- a/libs/partners/qdrant/langchain_qdrant/__init__.py
+++ b/libs/partners/qdrant/langchain_qdrant/__init__.py
@@ -1,3 +1,5 @@
+"""Qdrant vector database integration for LangChain."""
+
 from langchain_qdrant.fastembed_sparse import FastEmbedSparse
 from langchain_qdrant.qdrant import QdrantVectorStore, RetrievalMode
 from langchain_qdrant.sparse_embeddings import SparseEmbeddings, SparseVector