diff --git a/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API/Dfe.ManageFreeSchoolProjects.API.csproj b/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API/Dfe.ManageFreeSchoolProjects.API.csproj
index 791e1122c..66226fea5 100644
--- a/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API/Dfe.ManageFreeSchoolProjects.API.csproj
+++ b/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API/Dfe.ManageFreeSchoolProjects.API.csproj
@@ -27,7 +27,7 @@
 
     <ItemGroup>
       <PackageReference Include="Ardalis.GuardClauses" Version="4.5.0" />
-      <PackageReference Include="DocumentFormat.OpenXml" Version="3.1.0" />
+      <PackageReference Include="DocumentFormat.OpenXml" Version="3.1.1" />
       <PackageReference Include="FluentValidation" Version="11.9.2" />
       <PackageReference Include="GovukNotify" Version="7.2.0" />
       <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.22.0" />
diff --git a/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.csproj b/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.csproj
index e0bf85bec..d61597364 100644
--- a/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.csproj
+++ b/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.csproj
@@ -52,7 +52,7 @@
 	<ItemGroup>
 	  <PackageReference Include="AngleSharp" Version="1.1.2" />
 	  <PackageReference Include="Azure.Extensions.AspNetCore.DataProtection.Keys" Version="1.2.4" />
-	  <PackageReference Include="DocumentFormat.OpenXml" Version="3.1.0" />
+	  <PackageReference Include="DocumentFormat.OpenXml" Version="3.1.1" />
 	  <PackageReference Include="ExcelDataReader" Version="3.7.0" />
 	  <PackageReference Include="ExcelDataReader.DataSet" Version="3.7.0" />
 	  <PackageReference Include="FluentValidation" Version="11.9.2" />