diff --git a/docutranslate/workflow/md_based_workflow.py b/docutranslate/workflow/md_based_workflow.py
index 8f5f03c..e60f584 100644
--- a/docutranslate/workflow/md_based_workflow.py
+++ b/docutranslate/workflow/md_based_workflow.py
@@ -62,7 +62,7 @@ class MarkdownBasedWorkflow(Workflow[MarkdownBasedWorkflowConfig, Document, Mark
         document_cached = md_based_convert_cacher.get_cached_result(self.document_original, convert_engin,
                                                                     convert_config)
         if document_cached:
-            self.attachment.add_document("md_cached",document_cached)
+            self.attachment.add_document("md_cached",document_cached.copy())
             return document_cached
 
         # 未缓存则解析文件
diff --git a/更新日志.txt b/更新日志.txt
index c879045..c77c5d8 100644
--- a/更新日志.txt
+++ b/更新日志.txt
@@ -1,5 +1,10 @@
 更新日志
 ----------------
+v1.4.6版 2025.9.24
+修复
+- 修复切换界面语言时部分文本未改变的问题
+- 修复pdf解析缓存未正确缓存翻译前文本的问题
+----------------
 v1.4.5版 2025.9.24
 特性
 - 支持ass字幕翻译