diff --git a/Dfe.Academies.Academisation.Service/Dfe.Academies.Academisation.Service.csproj b/Dfe.Academies.Academisation.Service/Dfe.Academies.Academisation.Service.csproj
index 86c7bf61..a88d7f00 100644
--- a/Dfe.Academies.Academisation.Service/Dfe.Academies.Academisation.Service.csproj
+++ b/Dfe.Academies.Academisation.Service/Dfe.Academies.Academisation.Service.csproj
@@ -21,7 +21,7 @@
   <ItemGroup>
     <PackageReference Include="Ardalis.GuardClauses" Version="4.5.0" />
     <PackageReference Include="AutoMapper" Version="13.0.1" />
-    <PackageReference Include="ClosedXML" Version="0.102.3" />
+    <PackageReference Include="ClosedXML" Version="0.104.2" />
     <PackageReference Include="Dfe.Academies.Contracts" Version="1.0.10" />
     <PackageReference Include="Dfe.Academisation.ExtensionMethods" Version="2.0.0" />
     <PackageReference Include="Polly" Version="8.4.2" />