diff --git a/DigitalLearningSolutions.Web.AutomatedUiTests/DigitalLearningSolutions.Web.AutomatedUiTests.csproj b/DigitalLearningSolutions.Web.AutomatedUiTests/DigitalLearningSolutions.Web.AutomatedUiTests.csproj
index a26a174269..777eabaa84 100644
--- a/DigitalLearningSolutions.Web.AutomatedUiTests/DigitalLearningSolutions.Web.AutomatedUiTests.csproj
+++ b/DigitalLearningSolutions.Web.AutomatedUiTests/DigitalLearningSolutions.Web.AutomatedUiTests.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="FluentAssertions" Version="5.10.3" />
+    <PackageReference Include="FluentAssertions" Version="7.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="7.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
     <PackageReference Include="Selenium.Axe" Version="4.0.21" />
diff --git a/DigitalLearningSolutions.Web.IntegrationTests/DigitalLearningSolutions.Web.IntegrationTests.csproj b/DigitalLearningSolutions.Web.IntegrationTests/DigitalLearningSolutions.Web.IntegrationTests.csproj
index 2ca3bc89c9..8165751cbf 100644
--- a/DigitalLearningSolutions.Web.IntegrationTests/DigitalLearningSolutions.Web.IntegrationTests.csproj
+++ b/DigitalLearningSolutions.Web.IntegrationTests/DigitalLearningSolutions.Web.IntegrationTests.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="FakeItEasy" Version="7.4.0" />
-    <PackageReference Include="FluentAssertions.AspNetCore.Mvc" Version="3.2.0" />
+    <PackageReference Include="FluentAssertions.AspNetCore.Mvc" Version="4.1.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="7.0.0" />
     <PackageReference Include="xunit" Version="2.9.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1">
diff --git a/DigitalLearningSolutions.Web.Tests/DigitalLearningSolutions.Web.Tests.csproj b/DigitalLearningSolutions.Web.Tests/DigitalLearningSolutions.Web.Tests.csproj
index ef4dd6e67f..05aad5522b 100644
--- a/DigitalLearningSolutions.Web.Tests/DigitalLearningSolutions.Web.Tests.csproj
+++ b/DigitalLearningSolutions.Web.Tests/DigitalLearningSolutions.Web.Tests.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
@@ -9,8 +9,8 @@
 
   <ItemGroup>
     <PackageReference Include="FakeItEasy" Version="7.4.0" />
-    <PackageReference Include="FluentAssertions" Version="5.10.3" />
-    <PackageReference Include="FluentAssertions.AspNetCore.Mvc" Version="3.2.0" />
+    <PackageReference Include="FluentAssertions" Version="7.0.0" />
+    <PackageReference Include="FluentAssertions.AspNetCore.Mvc" Version="4.1.0" />
     <PackageReference Include="NBuilder" Version="6.1.0" />
     <PackageReference Include="NUnit" Version="3.14.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
diff --git a/DigitalLearningSolutions.Web.Tests/Services/CentresServiceTests.cs b/DigitalLearningSolutions.Web.Tests/Services/CentresServiceTests.cs
index 196523126f..54f06eaa79 100644
--- a/DigitalLearningSolutions.Web.Tests/Services/CentresServiceTests.cs
+++ b/DigitalLearningSolutions.Web.Tests/Services/CentresServiceTests.cs
@@ -135,7 +135,7 @@ public void GetCentreSummaryForFindContactDislay_calls_dataService_and_returns_o
             var result = centresService.GetCentreSummaryForContactDisplay(selectedCenter);
 
             // Then
-            result.Should().Equals(1);
+            result.Should().NotBeNull();
         }
 
         [Test]
diff --git a/DigitalLearningSolutions.Web.Tests/TestHelpers/SessionTestHelper.cs b/DigitalLearningSolutions.Web.Tests/TestHelpers/SessionTestHelper.cs
index 5370e6bb89..1860ca7d12 100644
--- a/DigitalLearningSolutions.Web.Tests/TestHelpers/SessionTestHelper.cs
+++ b/DigitalLearningSolutions.Web.Tests/TestHelpers/SessionTestHelper.cs
@@ -66,7 +66,7 @@ public static Session CreateDefaultSession(
 
         public static void SessionsShouldBeApproximatelyEquivalent(Session session1, Session session2)
         {
-            const int tenSecondsInMilliseconds = 10000;
+            var tenSecondsInMilliseconds = TimeSpan.FromMilliseconds(10000);
 
             session1.CandidateId.Should().Be(session2.CandidateId);
             session1.CustomisationId.Should().Be(session2.CustomisationId);