diff --git a/examples/disaggregated_prefill_v1/load_balance_proxy_layerwise_server_example.py b/examples/disaggregated_prefill_v1/load_balance_proxy_layerwise_server_example.py
index 53353ce..c0d4b51 100644
--- a/examples/disaggregated_prefill_v1/load_balance_proxy_layerwise_server_example.py
+++ b/examples/disaggregated_prefill_v1/load_balance_proxy_layerwise_server_example.py
@@ -17,7 +17,7 @@
 # Prerequisites:
 # - Python 3.8+
 # - Install dependencies:
-#     pip install fastapi httpx uvicorn vllm
+#     pip install fastapi<0.124.0 httpx uvicorn vllm
 #
 # Step 1: Start Your Backend Servers
 # ----------------------------------
diff --git a/examples/disaggregated_prefill_v1/load_balance_proxy_server_example.py b/examples/disaggregated_prefill_v1/load_balance_proxy_server_example.py
index c02a6fa..0a315bd 100644
--- a/examples/disaggregated_prefill_v1/load_balance_proxy_server_example.py
+++ b/examples/disaggregated_prefill_v1/load_balance_proxy_server_example.py
@@ -17,7 +17,7 @@
 # Prerequisites:
 # - Python 3.8+
 # - Install dependencies:
-#     pip install fastapi httpx uvicorn vllm
+#     pip install fastapi<0.124.0 httpx uvicorn vllm
 #
 # Step 1: Start Your Backend Servers
 # ----------------------------------
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8db787f..3509a48 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -17,4 +17,4 @@ ray>=2.47.1
 protobuf>3.20.0
 librosa 
 soundfile
-pytest_mock
\ No newline at end of file
+fastapi<0.124.0
\ No newline at end of file