diff --git a/src/Docx2Md.Core/Docx2Md.Core.csproj b/src/Docx2Md.Core/Docx2Md.Core.csproj
index e39e51a..3a760bc 100644
--- a/src/Docx2Md.Core/Docx2Md.Core.csproj
+++ b/src/Docx2Md.Core/Docx2Md.Core.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="DocumentFormat.OpenXml" Version="3.2.0" />
+    <PackageReference Include="DocumentFormat.OpenXml" Version="3.5.1" />
   </ItemGroup>
 
 </Project>