diff --git a/win/setup/scanner/Readme.txt b/win/setup/scanner/Readme.txt
index 148004d..c61508e 100644
--- a/win/setup/scanner/Readme.txt
+++ b/win/setup/scanner/Readme.txt
@@ -1,3 +1,6 @@
+V4.52.24012
+1、更新汉王OCR库，解决A3幅面导出或另存为会导致弹窗或崩溃的问题；BUG-869；BUG-870
+
 V4.52.24011
 1、中性版本app增加英文版；
 2、gdi加载灰度图像先转成彩色，解决图像加载出来有噪点的问题；