diff --git a/lightrag/kg/postgres_impl.py b/lightrag/kg/postgres_impl.py
index c30657cd..66f0dd6c 100644
--- a/lightrag/kg/postgres_impl.py
+++ b/lightrag/kg/postgres_impl.py
@@ -4053,6 +4053,7 @@ TABLES = {
                     original_prompt TEXT,
                     return_value TEXT,
                     chunk_id VARCHAR(255) NULL,
+                    cache_type VARCHAR(32),
                     create_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
                     update_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
 	                CONSTRAINT LIGHTRAG_LLM_CACHE_PK PRIMARY KEY (workspace, mode, id)