diff --git a/README.md b/README.md
index 7f83c7e1..decb7867 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,8 @@
 </div>
 
 # Changelog
+- 2025/07/24 2.1.5 Released
+  - `sglang` 0.4.9 version adaptation, synchronously upgrading the dockerfile base image to sglang 0.4.9.post3
 - 2025/07/23 2.1.4 Released
   - Bug Fixes
     - Fixed the issue of excessive memory consumption during the `MFR` step in the `pipeline` backend under certain scenarios #2771
diff --git a/README_zh-CN.md b/README_zh-CN.md
index 5986b354..f73560e8 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -43,6 +43,8 @@
 </div>
 
 # 更新记录
+- 2025/07/24 2.1.5发布
+  - `sglang` 0.4.9 版本适配，同步升级dockerfile基础镜像为sglang 0.4.9.post3
 - 2025/07/23 2.1.4发布
   - bug修复
     - 修复`pipeline`后端中`MFR`步骤在某些情况下显存消耗过大的问题 #2771
diff --git a/docker/china/Dockerfile b/docker/china/Dockerfile
index 8aac3606..e192d450 100644
--- a/docker/china/Dockerfile
+++ b/docker/china/Dockerfile
@@ -1,5 +1,7 @@
 # Use the official sglang image
-FROM lmsysorg/sglang:v0.4.8.post1-cu126
+FROM lmsysorg/sglang:v0.4.9.post3-cu126
+# For blackwell GPU, use the following line instead:
+# FROM lmsysorg/sglang:v0.4.9.post3-cu128-b200
 
 # Install libgl for opencv support & Noto fonts for Chinese characters
 RUN apt-get update && \
diff --git a/docker/global/Dockerfile b/docker/global/Dockerfile
index 6a4f72df..4986130a 100644
--- a/docker/global/Dockerfile
+++ b/docker/global/Dockerfile
@@ -1,5 +1,7 @@
 # Use the official sglang image
-FROM lmsysorg/sglang:v0.4.8.post1-cu126
+FROM lmsysorg/sglang:v0.4.9.post3-cu126
+# For blackwell GPU, use the following line instead:
+# FROM lmsysorg/sglang:v0.4.9.post3-cu128-b200
 
 # Install libgl for opencv support & Noto fonts for Chinese characters
 RUN apt-get update && \
diff --git a/docs/en/quick_start/docker_deployment.md b/docs/en/quick_start/docker_deployment.md
index bb0a2cd2..fdea014b 100644
--- a/docs/en/quick_start/docker_deployment.md
+++ b/docs/en/quick_start/docker_deployment.md
@@ -10,8 +10,8 @@ docker build -t mineru-sglang:latest -f Dockerfile .
 ```
 
 > [!TIP]
-> The [Dockerfile](https://github.com/opendatalab/MinerU/blob/master/docker/global/Dockerfile) uses `lmsysorg/sglang:v0.4.8.post1-cu126` as the base image by default, supporting Turing/Ampere/Ada Lovelace/Hopper platforms.
-> If you are using the newer `Blackwell` platform, please modify the base image to `lmsysorg/sglang:v0.4.8.post1-cu128-b200` before executing the build operation.
+> The [Dockerfile](https://github.com/opendatalab/MinerU/blob/master/docker/global/Dockerfile) uses `lmsysorg/sglang:v0.4.9.post3-cu126` as the base image by default, supporting Turing/Ampere/Ada Lovelace/Hopper platforms.
+> If you are using the newer `Blackwell` platform, please modify the base image to `lmsysorg/sglang:v0.4.9.post3-cu128-b200` before executing the build operation.
 
 ## Docker Description
 
diff --git a/docs/zh/quick_start/docker_deployment.md b/docs/zh/quick_start/docker_deployment.md
index 8cf088e6..1f110ab6 100644
--- a/docs/zh/quick_start/docker_deployment.md
+++ b/docs/zh/quick_start/docker_deployment.md
@@ -10,8 +10,8 @@ docker build -t mineru-sglang:latest -f Dockerfile .
 ```
 
 > [!TIP]
-> [Dockerfile](https://github.com/opendatalab/MinerU/blob/master/docker/china/Dockerfile)默认使用`lmsysorg/sglang:v0.4.8.post1-cu126`作为基础镜像，支持Turing/Ampere/Ada Lovelace/Hopper平台，
-> 如您使用较新的`Blackwell`平台，请将基础镜像修改为`lmsysorg/sglang:v0.4.8.post1-cu128-b200` 再执行build操作。
+> [Dockerfile](https://github.com/opendatalab/MinerU/blob/master/docker/china/Dockerfile)默认使用`lmsysorg/sglang:v0.4.9.post3-cu126`作为基础镜像，支持Turing/Ampere/Ada Lovelace/Hopper平台，
+> 如您使用较新的`Blackwell`平台，请将基础镜像修改为`lmsysorg/sglang:v0.4.9.post3-cu128-b200` 再执行build操作。
 
 ## Docker说明