diff --git a/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API.Contracts.Tests/Dfe.ManageFreeSchoolProjects.API.Contracts.Tests.csproj b/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API.Contracts.Tests/Dfe.ManageFreeSchoolProjects.API.Contracts.Tests.csproj
index c2399d056..e9bca91ee 100644
--- a/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API.Contracts.Tests/Dfe.ManageFreeSchoolProjects.API.Contracts.Tests.csproj
+++ b/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API.Contracts.Tests/Dfe.ManageFreeSchoolProjects.API.Contracts.Tests.csproj
@@ -11,7 +11,7 @@
   <ItemGroup>
     <PackageReference Include="AutoFixture" Version="4.18.1" />
     <PackageReference Include="AutoFixture.AutoMoq" Version="4.18.1" />
-    <PackageReference Include="AutoFixture.Idioms" Version="4.18.0" />
+    <PackageReference Include="AutoFixture.Idioms" Version="4.18.1" />
     <PackageReference Include="AutoFixture.Xunit2" Version="4.18.1" />
     <PackageReference Include="FluentAssertions" Version="6.12.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
diff --git a/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API.Tests/Dfe.ManageFreeSchoolProjects.API.Tests.csproj b/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API.Tests/Dfe.ManageFreeSchoolProjects.API.Tests.csproj
index c7352b1f3..fccec9b78 100644
--- a/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API.Tests/Dfe.ManageFreeSchoolProjects.API.Tests.csproj
+++ b/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.API.Tests/Dfe.ManageFreeSchoolProjects.API.Tests.csproj
@@ -18,7 +18,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="AutoFixture.Idioms" Version="4.18.0" />
+        <PackageReference Include="AutoFixture.Idioms" Version="4.18.1" />
         <PackageReference Include="AutoFixture.Xunit2" Version="4.18.1" />
         <PackageReference Include="FluentAssertions" Version="6.12.0" />
         <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="6.0.31" />
diff --git a/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.UserContext.Tests/Dfe.ManageFreeSchoolProjects.UserContext.Tests.csproj b/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.UserContext.Tests/Dfe.ManageFreeSchoolProjects.UserContext.Tests.csproj
index 75ae1f128..e442285e7 100644
--- a/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.UserContext.Tests/Dfe.ManageFreeSchoolProjects.UserContext.Tests.csproj
+++ b/Dfe.ManageFreeSchoolProjects/Dfe.ManageFreeSchoolProjects.UserContext.Tests/Dfe.ManageFreeSchoolProjects.UserContext.Tests.csproj
@@ -11,7 +11,7 @@
   <ItemGroup>
     <PackageReference Include="AutoFixture" Version="4.18.1" />
     <PackageReference Include="AutoFixture.AutoMoq" Version="4.18.1" />
-    <PackageReference Include="AutoFixture.Idioms" Version="4.18.0" />
+    <PackageReference Include="AutoFixture.Idioms" Version="4.18.1" />
     <PackageReference Include="AutoFixture.Xunit2" Version="4.18.1" />
     <PackageReference Include="FluentAssertions" Version="6.12.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />