diff --git a/python/pyproject.toml b/python/pyproject.toml
index 2ed89c19f..faf6cba06 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -52,7 +52,7 @@ runtime_common = [
 
 srt = [
     "sglang[runtime_common]",
-    "sgl-kernel==0.1.9",
+    "sgl-kernel==0.2.1",
     "torch==2.7.1",
     "torchaudio==2.7.1",
     "torchvision==0.22.1",
diff --git a/python/sglang/srt/entrypoints/engine.py b/python/sglang/srt/entrypoints/engine.py
index 87e7a65ae..c5663123a 100644
--- a/python/sglang/srt/entrypoints/engine.py
+++ b/python/sglang/srt/entrypoints/engine.py
@@ -641,7 +641,7 @@ def _set_envs_and_config(server_args: ServerArgs):
     if _is_cuda:
         assert_pkg_version(
             "sgl-kernel",
-            "0.1.9",
+            "0.2.1",
             "Please reinstall the latest version with `pip install sgl-kernel --force-reinstall`",
         )