diff --git a/src/server/api/Sprk.Bff.Api/Sprk.Bff.Api.csproj b/src/server/api/Sprk.Bff.Api/Sprk.Bff.Api.csproj
index bee12091..e2815df0 100644
--- a/src/server/api/Sprk.Bff.Api/Sprk.Bff.Api.csproj
+++ b/src/server/api/Sprk.Bff.Api/Sprk.Bff.Api.csproj
@@ -84,7 +84,7 @@
     <PackageReference Include="System.Text.RegularExpressions" Version="4.3.1" />
 
     <!-- Document Generation -->
-    <PackageReference Include="DocumentFormat.OpenXml" Version="3.4.1" />
+    <PackageReference Include="DocumentFormat.OpenXml" Version="3.5.1" />
 
     <!-- Power BI Embedded Reporting (PBI-001) -->
     <PackageReference Include="Microsoft.PowerBI.Api" Version="4.21.1" />