diff --git a/src/Directory.Packages.props b/src/Directory.Packages.props
index a0447ff284..481daef495 100644
--- a/src/Directory.Packages.props
+++ b/src/Directory.Packages.props
@@ -95,7 +95,6 @@
     <PackageVersion Include="System.Reflection.MetadataLoadContext" Version="$(RuntimeFrameworkVersion)" />
     <PackageVersion Include="System.ServiceProcess.ServiceController" Version="$(RuntimeFrameworkVersion)" />
     <PackageVersion Include="Validar.Fody" Version="1.9.0" />
-    <PackageVersion Include="Verify.NUnit" Version="31.20.0" />
     <PackageVersion Include="Yarp.ReverseProxy" Version="2.3.0" />
   </ItemGroup>
   <ItemGroup Label="Versions to pin transitive references">
diff --git a/src/ServiceControl.Infrastructure.Tests/ApprovalFiles/RouteManifestEntrySerializationTests.Response_wraps_roles_and_routes_under_pinned_field_names.approved.txt b/src/ServiceControl.Infrastructure.Tests/ApprovalFiles/RouteManifestEntrySerializationTests.Response_wraps_roles_and_routes_under_pinned_field_names.approved.txt
new file mode 100644
index 0000000000..92fd36a197
--- /dev/null
+++ b/src/ServiceControl.Infrastructure.Tests/ApprovalFiles/RouteManifestEntrySerializationTests.Response_wraps_roles_and_routes_under_pinned_field_names.approved.txt
@@ -0,0 +1 @@
+{"roles":["admin"],"routes":[{"method":"GET","url_template":"/api/errors"}]}
\ No newline at end of file
diff --git a/src/ServiceControl.Infrastructure.Tests/Auth/RouteManifestEntrySerializationTests.Response_wraps_roles_and_routes_under_pinned_field_names.verified.txt b/src/ServiceControl.Infrastructure.Tests/Auth/RouteManifestEntrySerializationTests.Response_wraps_roles_and_routes_under_pinned_field_names.verified.txt
deleted file mode 100644
index ed2dd257ef..0000000000
--- a/src/ServiceControl.Infrastructure.Tests/Auth/RouteManifestEntrySerializationTests.Response_wraps_roles_and_routes_under_pinned_field_names.verified.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  roles: [
-    admin
-  ],
-  routes: [
-    {
-      method: GET,
-      url_template: /api/errors
-    }
-  ]
-}
\ No newline at end of file
diff --git a/src/ServiceControl.Infrastructure.Tests/Auth/RouteManifestEntrySerializationTests.cs b/src/ServiceControl.Infrastructure.Tests/Auth/RouteManifestEntrySerializationTests.cs
index 3d72610362..2c2efe9a11 100644
--- a/src/ServiceControl.Infrastructure.Tests/Auth/RouteManifestEntrySerializationTests.cs
+++ b/src/ServiceControl.Infrastructure.Tests/Auth/RouteManifestEntrySerializationTests.cs
@@ -2,10 +2,9 @@
 namespace ServiceControl.Infrastructure.Tests.Auth;
 
 using System.Text.Json;
-using System.Threading.Tasks;
 using NUnit.Framework;
+using Particular.Approvals;
 using ServiceControl.Infrastructure.Auth;
-using VerifyNUnit;
 
 [TestFixture]
 class RouteManifestEntrySerializationTests
@@ -30,12 +29,12 @@ public void Emits_snake_case_field_names_even_under_a_camelCase_policy()
     // Same contract as above, but for the response wrapper: roles are reported once at the top level,
     // not duplicated onto every route entry.
     [Test]
-    public Task Response_wraps_roles_and_routes_under_pinned_field_names()
+    public void Response_wraps_roles_and_routes_under_pinned_field_names()
     {
         var json = JsonSerializer.Serialize(
             new MyRoutesResponse(["admin"], [new RouteManifestEntry("GET", "/api/errors")]),
             new JsonSerializerOptions { PropertyNamingPolicy = JsonNamingPolicy.CamelCase });
 
-        return Verifier.VerifyJson(json);
+        Approver.Verify(json);
     }
 }
diff --git a/src/ServiceControl.Infrastructure.Tests/ServiceControl.Infrastructure.Tests.csproj b/src/ServiceControl.Infrastructure.Tests/ServiceControl.Infrastructure.Tests.csproj
index 5c53d4918f..147347f072 100644
--- a/src/ServiceControl.Infrastructure.Tests/ServiceControl.Infrastructure.Tests.csproj
+++ b/src/ServiceControl.Infrastructure.Tests/ServiceControl.Infrastructure.Tests.csproj
@@ -18,7 +18,7 @@
     <PackageReference Include="NUnit" />
     <PackageReference Include="NUnit.Analyzers" />
     <PackageReference Include="NUnit3TestAdapter" />
-    <PackageReference Include="Verify.NUnit" />
+    <PackageReference Include="Particular.Approvals" />
   </ItemGroup>
 
 </Project>
\ No newline at end of file