diff --git a/requirements.txt b/requirements.txt
index 646a5c7..93908dd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-langchain==0.0.257
+langchain==0.0.266
 openai
 sentence_transformers
 fschat==0.2.24
diff --git a/requirements_api.txt b/requirements_api.txt
index 1e13587..f567f9f 100644
--- a/requirements_api.txt
+++ b/requirements_api.txt
@@ -1,4 +1,4 @@
-langchain==0.0.257
+langchain==0.0.266
 openai
 sentence_transformers
 fschat==0.2.24