diff --git a/requirements.txt b/requirements.txt
index 3efd0200..46bafe1c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,8 @@
 # API requirements
 
-langchain>=0.0.329 # suggest to use latest Langchain
+langchain>=0.0.329,<0.0.340
 langchain-experimental>=0.0.30
-fschat[model_worker]==0.2.32
+fschat[model_worker]>=0.2.33
 xformers>=0.0.22.post4
 openai>=0.28.1
 sentence_transformers
diff --git a/requirements_api.txt b/requirements_api.txt
index 48e66b92..b78beb8a 100644
--- a/requirements_api.txt
+++ b/requirements_api.txt
@@ -1,8 +1,8 @@
 # API requirements
 
-langchain>=0.0.329 # suggest to use latest Langchain
+langchain>=0.0.329,<0.0.340
 langchain-experimental>=0.0.30
-fschat[model_worker]==0.2.32
+fschat[model_worker]>=0.2.33
 xformers>=0.0.22.post4
 openai>=0.28.1
 sentence_transformers
diff --git a/requirements_lite.txt b/requirements_lite.txt
index 3f750379..f76024e6 100644
--- a/requirements_lite.txt
+++ b/requirements_lite.txt
@@ -1,5 +1,5 @@
-langchain>=0.0.329 # suggest to use latest Langchain
-fschat>=0.2.32
+langchain>=0.0.329,<0.0.340
+fschat>=0.2.33
 openai
 # sentence_transformers
 # transformers>=4.35.0
diff --git a/requirements_webui.txt b/requirements_webui.txt
index 65ff7526..88fb3fc8 100644
--- a/requirements_webui.txt
+++ b/requirements_webui.txt
@@ -5,5 +5,5 @@ streamlit-option-menu>=0.3.6
 streamlit-antd-components>=0.1.11
 streamlit-chatbox>=1.1.11
 streamlit-aggrid>=0.3.4.post3
-httpx[brotli,http2,socks]>=0.25.0
+httpx[brotli,http2,socks]~=0.24.1
 watchdog