diff --git a/backend-python/dep_check.py b/backend-python/dep_check.py
index b451d1c..09bb1a6 100644
--- a/backend-python/dep_check.py
+++ b/backend-python/dep_check.py
@@ -1,3 +1,8 @@
+import setuptools
+
+if setuptools.__version__ >= "70.0.0":
+    raise ImportError("setuptools>=70.0.0 is not supported")
+
 import multipart
 import fitz
 import safetensors
diff --git a/backend-python/requirements.txt b/backend-python/requirements.txt
index 1d19926..92cb66f 100644
--- a/backend-python/requirements.txt
+++ b/backend-python/requirements.txt
@@ -1,6 +1,7 @@
 torch
 torchvision
 torchaudio
+setuptools==69.5.1
 rwkv==0.8.26
 langchain==0.0.322
 fastapi==0.109.1
diff --git a/backend-python/requirements_without_cyac.txt b/backend-python/requirements_without_cyac.txt
index b23a384..70c82db 100644
--- a/backend-python/requirements_without_cyac.txt
+++ b/backend-python/requirements_without_cyac.txt
@@ -1,6 +1,7 @@
 torch
 torchvision
 torchaudio
+setuptools==69.5.1
 rwkv==0.8.26
 langchain==0.0.322
 fastapi==0.109.1