diff --git a/requirements.txt b/requirements.txt
index 8dcf868..02ec030 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ nltk>=3.8.1
 uvicorn~=0.23.1
 starlette~=0.27.0
 pydantic<2
-unstructured[all-docs]>=0.11.0
+unstructured[all-docs]==0.11.0
 python-magic-bin; sys_platform == 'win32'
 SQLAlchemy==2.0.19
 faiss-cpu
diff --git a/requirements_api.txt b/requirements_api.txt
index 9b31aad..53eda87 100644
--- a/requirements_api.txt
+++ b/requirements_api.txt
@@ -15,7 +15,7 @@ nltk>=3.8.1
 uvicorn~=0.23.1
 starlette~=0.27.0
 pydantic<2
-unstructured[all-docs]>=0.11.0
+unstructured[all-docs]==0.11.0
 python-magic-bin; sys_platform == 'win32'
 SQLAlchemy==2.0.19
 faiss-cpu
diff --git a/requirements_lite.txt b/requirements_lite.txt
index e9d4493..3ef267f 100644
--- a/requirements_lite.txt
+++ b/requirements_lite.txt
@@ -12,7 +12,7 @@ nltk~=3.8.1
 uvicorn~=0.23.1
 starlette~=0.27.0
 pydantic~=1.10.11
-unstructured[docx,csv]>=0.10.4 # add pdf if need
+unstructured[docx,csv]==0.11.0 # add pdf if need
 python-magic-bin; sys_platform == 'win32'
 SQLAlchemy==2.0.19
 faiss-cpu
diff --git a/server/utils.py b/server/utils.py
index c12f044..1e0c424 100644
--- a/server/utils.py
+++ b/server/utils.py
@@ -41,7 +41,7 @@ def get_ChatOpenAI(
         **kwargs: Any,
 ) -> ChatOpenAI:
     config = get_model_worker_config(model_name)
-    if config.get("openai-api"):
+    if model_name == "openai-api":
         model_name = config.get("model_name")
     model = ChatOpenAI(
         streaming=streaming,
@@ -56,6 +56,7 @@ def get_ChatOpenAI(
         **kwargs
     )
     return model
+
 def get_OpenAI(
         model_name: str,
         temperature: float,
@@ -67,7 +68,7 @@ def get_OpenAI(
         **kwargs: Any,
 ) -> OpenAI:
     config = get_model_worker_config(model_name)
-    if config.get("openai-api"):
+    if model_name == "openai-api":
         model_name = config.get("model_name")
     model = OpenAI(
         streaming=streaming,