diff --git a/src/NServiceBus.AwsLambda.SQS.AcceptanceTests/NServiceBus.AwsLambda.SQS.AcceptanceTests.csproj b/src/NServiceBus.AwsLambda.SQS.AcceptanceTests/NServiceBus.AwsLambda.SQS.AcceptanceTests.csproj
index 23ac3dc..138fabf 100644
--- a/src/NServiceBus.AwsLambda.SQS.AcceptanceTests/NServiceBus.AwsLambda.SQS.AcceptanceTests.csproj
+++ b/src/NServiceBus.AwsLambda.SQS.AcceptanceTests/NServiceBus.AwsLambda.SQS.AcceptanceTests.csproj
@@ -15,7 +15,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="NServiceBus" Version="9.0.0" />
     <PackageReference Include="NServiceBus.AmazonSQS" Version="7.0.0" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.1.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
   </ItemGroup>
 
diff --git a/src/NServiceBus.AwsLambda.SQS.Analyzer.Tests/NServiceBus.AwsLambda.SQS.Analyzer.Tests.csproj b/src/NServiceBus.AwsLambda.SQS.Analyzer.Tests/NServiceBus.AwsLambda.SQS.Analyzer.Tests.csproj
index 0a69d94..af613ec 100644
--- a/src/NServiceBus.AwsLambda.SQS.Analyzer.Tests/NServiceBus.AwsLambda.SQS.Analyzer.Tests.csproj
+++ b/src/NServiceBus.AwsLambda.SQS.Analyzer.Tests/NServiceBus.AwsLambda.SQS.Analyzer.Tests.csproj
@@ -13,7 +13,7 @@
     <PackageReference Include="GitHubActionsTestLogger" Version="2.3.3" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.8.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.1.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
   </ItemGroup>
 
diff --git a/src/NServiceBus.AwsLambda.SQS.Tests/NServiceBus.AwsLambda.SQS.Tests.csproj b/src/NServiceBus.AwsLambda.SQS.Tests/NServiceBus.AwsLambda.SQS.Tests.csproj
index 0e67cdb..158655e 100644
--- a/src/NServiceBus.AwsLambda.SQS.Tests/NServiceBus.AwsLambda.SQS.Tests.csproj
+++ b/src/NServiceBus.AwsLambda.SQS.Tests/NServiceBus.AwsLambda.SQS.Tests.csproj
@@ -15,7 +15,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="NServiceBus" Version="9.0.0" />
     <PackageReference Include="NServiceBus.AmazonSQS" Version="7.0.0" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.1.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageReference Include="Particular.Approvals" Version="1.0.0" />
     <PackageReference Include="PublicApiGenerator" Version="11.1.0" />