diff --git a/Windows-X64/office_plugin.dll b/Windows-X64/office_plugin.dll
index c7b3d70..8ab9a1d 100644
Binary files a/Windows-X64/office_plugin.dll and b/Windows-X64/office_plugin.dll differ
diff --git a/funcext/TSOffice/TOfficeObj.tsf b/funcext/TSOffice/TOfficeObj.tsf
index cf8da28..822a755 100644
--- a/funcext/TSOffice/TOfficeObj.tsf
+++ b/funcext/TSOffice/TOfficeObj.tsf
@@ -1,4 +1,4 @@
-// Version 1.5.5
+// Version 1.5.6
 Function TOfficeObj(n);
 Begin
 	case lowercase(n) of
diff --git a/funcext/TSOffice/TSDocxFile.tsf b/funcext/TSOffice/TSDocxFile.tsf
index f21fca1..0e1ed01 100644
--- a/funcext/TSOffice/TSDocxFile.tsf
+++ b/funcext/TSOffice/TSDocxFile.tsf
@@ -1,4 +1,4 @@
-// Version 1.5.5
+// Version 1.5.6
 Type TSDocxFile = Class
 	///Version: V1.0 2022-09-20
 	///适用于 Microsoft Word docx格式文件
diff --git a/funcext/TSOffice/TSXlsxFile.tsf b/funcext/TSOffice/TSXlsxFile.tsf
index b845f19..374d16c 100644
--- a/funcext/TSOffice/TSXlsxFile.tsf
+++ b/funcext/TSOffice/TSXlsxFile.tsf
@@ -1,4 +1,4 @@
-// Version 1.5.5
+// Version 1.5.6
 Type TSXlsxFile = Class
 	///Version: V1.0 2022-08-08
 	///适用于 Microsoft Excel? 2007 及以上版本创建的电子表格文档。支持 XLSX / XLSM / XLTM / XLTX 等多种文档格式。
diff --git a/更新日志.md b/更新日志.md
index 7a9348f..f4d7449 100644
--- a/更新日志.md
+++ b/更新日志.md
@@ -1,5 +1,13 @@
 # 更新日志
 
+## 2023-1-11
+
+### V1.5.6
+
+#### excel
+
+1. 修复单元格写入浮点数数据，精度丢失问题
+
 ## 2023-12-29
 
 ### V1.5.5