diff --git a/README.md b/README.md
index fdf1db89..537096c3 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,9 @@
 
 # Changelog
 
+- 2025/09/26 2.5.4 released  
+  - Fixed an issue where some `PDF` files were mistakenly identified as `AI` files, causing parsing failures
+
 - 2025/09/20 2.5.3 Released
   - Dependency version range adjustment to enable Turing and earlier architecture GPUs to use vLLM acceleration for MinerU2.5 model inference.
   - `pipeline` backend compatibility fixes for torch 2.8.0.
diff --git a/README_zh-CN.md b/README_zh-CN.md
index da250599..a6d6e3b5 100644
--- a/README_zh-CN.md
+++ b/README_zh-CN.md
@@ -43,6 +43,10 @@
 </div>
 
 # 更新记录
+
+- 2025/09/26 2.5.4 发布
+  - 修复部分`pdf`文件被识别成`ai`文件导致无法解析的问题
+
 - 2025/09/20 2.5.3 发布
   - 依赖版本范围调整，使得Turing及更早架构显卡可以使用vLLM加速推理MinerU2.5模型。
   - `pipeline`后端对torch 2.8.0的一些兼容性修复。