diff --git a/lightrag/kg/__init__.py b/lightrag/kg/__init__.py
index 697750e7..1f5fd56f 100644
--- a/lightrag/kg/__init__.py
+++ b/lightrag/kg/__init__.py
@@ -25,11 +25,11 @@ STORAGE_IMPLEMENTATIONS = {
         "implementations": [
             "NanoVectorDBStorage",
             "MilvusVectorDBStorage",
-            "ChromaVectorDBStorage",
             "PGVectorStorage",
             "FaissVectorDBStorage",
             "QdrantVectorDBStorage",
             "MongoVectorDBStorage",
+            # "ChromaVectorDBStorage",
             # "TiDBVectorDBStorage",
         ],
         "required_methods": ["query", "upsert"],
diff --git a/lightrag/kg/faiss_impl.py b/lightrag/kg/deprecated/faiss_impl.py
similarity index 100%
rename from lightrag/kg/faiss_impl.py
rename to lightrag/kg/deprecated/faiss_impl.py
diff --git a/lightrag/kg/gremlin_impl.py b/lightrag/kg/deprecated/gremlin_impl.py
similarity index 100%
rename from lightrag/kg/gremlin_impl.py
rename to lightrag/kg/deprecated/gremlin_impl.py
diff --git a/lightrag/kg/tidb_impl.py b/lightrag/kg/deprecated/tidb_impl.py
similarity index 100%
rename from lightrag/kg/tidb_impl.py
rename to lightrag/kg/deprecated/tidb_impl.py