diff --git a/lightrag/kg/faiss_impl.py b/lightrag/kg/faiss_impl.py
index f2afde2e..cb19497a 100644
--- a/lightrag/kg/faiss_impl.py
+++ b/lightrag/kg/faiss_impl.py
@@ -17,14 +17,13 @@ from .shared_storage import (
     set_all_update_flags,
 )
 
-import faiss  # type: ignore
-
 USE_GPU = os.getenv("FAISS_USE_GPU", "0") == "1"
 FAISS_PACKAGE = "faiss-gpu" if USE_GPU else "faiss-cpu"
-
 if not pm.is_installed(FAISS_PACKAGE):
     pm.install(FAISS_PACKAGE)
 
+import faiss  # type: ignore
+
 
 @final
 @dataclass