diff --git a/src/langchain_google_spanner/__init__.py b/src/langchain_google_spanner/__init__.py
index 430a7fd..84383ad 100644
--- a/src/langchain_google_spanner/__init__.py
+++ b/src/langchain_google_spanner/__init__.py
@@ -14,12 +14,12 @@
 
 from langchain_google_spanner.chat_message_history import SpannerChatMessageHistory
 from langchain_google_spanner.graph_qa import SpannerGraphQAChain
-from langchain_google_spanner.graph_store import SpannerGraphStore
 from langchain_google_spanner.graph_retriever import (
     SpannerGraphGQLRetriever,
     SpannerGraphNodeVectorRetriever,
     SpannerGraphSemanticGQLRetriever,
 )
+from langchain_google_spanner.graph_store import SpannerGraphStore
 from langchain_google_spanner.vector_store import (
     DistanceStrategy,
     QueryParameters,