diff --git a/.github/workflows/e2e-test.yml b/.github/workflows/e2e-test.yml
index 3514377e5..493d1d2d6 100644
--- a/.github/workflows/e2e-test.yml
+++ b/.github/workflows/e2e-test.yml
@@ -35,7 +35,6 @@ jobs:
         pip install -e "python[all]"
         pip install flashinfer -i https://flashinfer.ai/whl/cu121/torch2.3/ --force-reinstall
         pip install --upgrade transformers
-        pip install python-multipart
 
     - name: Benchmark Serving Throughput
       run: |
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 00bcdd2b6..fa6180b61 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -21,7 +21,7 @@ dependencies = [
 
 [project.optional-dependencies]
 srt = ["aiohttp", "fastapi", "hf_transfer", "huggingface_hub", "interegular", "packaging", "pillow",
-       "psutil", "pydantic", "torch", "uvicorn", "uvloop", "zmq", "vllm==0.5.3.post1", "outlines>=0.0.44"]
+       "psutil", "pydantic", "torch", "uvicorn", "uvloop", "zmq", "vllm==0.5.3.post1", "outlines>=0.0.44", "python-multipart"]
 openai = ["openai>=1.0", "tiktoken"]
 anthropic = ["anthropic>=0.20.0"]
 litellm = ["litellm>=1.0.0"]
diff --git a/python/sglang/check_env.py b/python/sglang/check_env.py
index d611b8127..1863c14a5 100644
--- a/python/sglang/check_env.py
+++ b/python/sglang/check_env.py
@@ -30,6 +30,7 @@ PACKAGE_LIST = [
     "zmq",
     "vllm",
     "outlines",
+    "multipart",
     "openai",
     "tiktoken",
     "anthropic",