diff --git a/scripts/rag_build_query.py b/scripts/rag_build_query.py
index 2e1424c..714c2b0 100644
--- a/scripts/rag_build_query.py
+++ b/scripts/rag_build_query.py
@@ -1,3 +1,5 @@
+import os
+
 from llama_index.core import SimpleDirectoryReader, VectorStoreIndex, ServiceContext, PromptTemplate
 from llama_index.embeddings.huggingface import HuggingFaceEmbedding
 from llama_index.vector_stores.faiss import FaissVectorStore