diff --git a/docker/Dockerfile b/docker/Dockerfile
index 36404a792..e80b52388 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -10,7 +10,7 @@ ARG HOPPER_SBO=0
 ARG HOPPER_SBO_DEEPEP_COMMIT=9f2fc4b3182a51044ae7ecb6610f7c9c3258c4d6
 ARG DEEPEP_COMMIT=9af0e0d0e74f3577af1979c9b9e1ac2cad0104ee
 ARG BUILD_AND_DOWNLOAD_PARALLEL=8
-ARG SGL_KERNEL_VERSION=0.4.2.post2
+ARG SGL_KERNEL_VERSION=0.4.3
 ARG SGL_VERSION
 ARG SGL_DEEP_GEMM_VERSION=0.1.0
 ARG USE_LATEST_SGLANG=0
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 376db0878..de3849335 100755
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -61,7 +61,7 @@ dependencies = [
   "setproctitle",
   "flash-attn-4>=4.0.0b9",
   "sgl-deep-gemm==0.1.0",
-  "sglang-kernel==0.4.2.post2",
+  "sglang-kernel==0.4.3",
   "soundfile==0.13.1",
   "tiktoken",
   "tilelang==0.1.8",
diff --git a/python/sglang/srt/entrypoints/engine.py b/python/sglang/srt/entrypoints/engine.py
index ee84ff105..4e2a45817 100644
--- a/python/sglang/srt/entrypoints/engine.py
+++ b/python/sglang/srt/entrypoints/engine.py
@@ -1264,7 +1264,7 @@ def _set_envs_and_config(server_args: ServerArgs):
         if _is_cuda:
             assert_pkg_version(
                 "sglang-kernel",
-                "0.4.2.post2",
+                "0.4.3",
                 "Please reinstall the latest version with `pip install sglang-kernel --force-reinstall`",
             )