From 9792b9d7e3687df66dcbc31673246dc14911d923 Mon Sep 17 00:00:00 2001
From: Yineng Zhang <me@zhyncs.com>
Date: Tue, 21 Oct 2025 14:46:31 -0700
Subject: [PATCH] chore: upgrade flashinfer 0.4.1 (#11933)

---
 python/pyproject.toml                   | 2 +-
 python/sglang/srt/entrypoints/engine.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/python/pyproject.toml b/python/pyproject.toml
index 2812d43c1..fabf2863e 100755
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -26,7 +26,7 @@ dependencies = [
   "datasets",
   "einops",
   "fastapi",
-  "flashinfer_python==0.4.0",
+  "flashinfer_python==0.4.1",
   "hf_transfer",
   "huggingface_hub",
   "interegular",
diff --git a/python/sglang/srt/entrypoints/engine.py b/python/sglang/srt/entrypoints/engine.py
index bee34adc6..2865c0f1e 100644
--- a/python/sglang/srt/entrypoints/engine.py
+++ b/python/sglang/srt/entrypoints/engine.py
@@ -685,7 +685,7 @@ def _set_envs_and_config(server_args: ServerArgs):
     if server_args.attention_backend == "flashinfer":
         assert_pkg_version(
             "flashinfer_python",
-            "0.4.0",
+            "0.4.1",
             "Please uninstall the old version and "
             "reinstall the latest version by following the instructions "
             "at https://docs.flashinfer.ai/installation.html.",