diff --git a/src/Altinn.App.Api/Altinn.App.Api.csproj b/src/Altinn.App.Api/Altinn.App.Api.csproj
index 71094893e..abbf2b29e 100644
--- a/src/Altinn.App.Api/Altinn.App.Api.csproj
+++ b/src/Altinn.App.Api/Altinn.App.Api.csproj
@@ -16,7 +16,7 @@
   <ItemGroup>
     <PackageReference Include="Altinn.Common.PEP" Version="4.1.2" />
     <PackageReference Include="Altinn.Platform.Storage.Interface" Version="4.0.4" />
-    <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="3.5.0" />
+    <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="4.0.0" />
     <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.10.0" />
     <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.10.0" />
     <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.9.0" />
diff --git a/src/Altinn.App.Core/Altinn.App.Core.csproj b/src/Altinn.App.Core/Altinn.App.Core.csproj
index ff4d9d798..8ed8f4364 100644
--- a/src/Altinn.App.Core/Altinn.App.Core.csproj
+++ b/src/Altinn.App.Core/Altinn.App.Core.csproj
@@ -27,7 +27,7 @@
     <!-- End JWTCookieAuthentication deps -->
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.22.0" />
     <PackageReference Include="Microsoft.Extensions.Caching.Hybrid" Version="[9.0.0-preview.9.24556.5]" NoWarn="NU5104" />
-    <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="3.5.0" />
+    <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="4.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="NetEscapades.EnumGenerators" Version="1.0.0-beta11" PrivateAssets="all" ExcludeAssets="runtime" />
     <PackageReference Include="OpenTelemetry.Api" Version="1.10.0" />
diff --git a/test/Altinn.App.Api.Tests/Altinn.App.Api.Tests.csproj b/test/Altinn.App.Api.Tests/Altinn.App.Api.Tests.csproj
index 0bde0e997..869e33c9f 100644
--- a/test/Altinn.App.Api.Tests/Altinn.App.Api.Tests.csproj
+++ b/test/Altinn.App.Api.Tests/Altinn.App.Api.Tests.csproj
@@ -13,7 +13,7 @@
     <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="8.0.11" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
-    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.9.0" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="7.1.0" />
     <PackageReference Include="xunit" Version="2.9.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/test/Altinn.App.Api.Tests/OpenApi/swagger.json b/test/Altinn.App.Api.Tests/OpenApi/swagger.json
index 64babbcb2..63f8ea339 100644
--- a/test/Altinn.App.Api.Tests/OpenApi/swagger.json
+++ b/test/Altinn.App.Api.Tests/OpenApi/swagger.json
@@ -1804,7 +1804,7 @@
             "description": "OK"
           },
           "425": {
-            "description": "Client Error"
+            "description": "Too Early"
           },
           "500": {
             "description": "Internal Server Error"
diff --git a/test/Altinn.App.Api.Tests/OpenApi/swagger.yaml b/test/Altinn.App.Api.Tests/OpenApi/swagger.yaml
index 82f33ba8f..b51ddaa7e 100644
--- a/test/Altinn.App.Api.Tests/OpenApi/swagger.yaml
+++ b/test/Altinn.App.Api.Tests/OpenApi/swagger.yaml
@@ -1101,7 +1101,7 @@ paths:
         '200':
           description: OK
         '425':
-          description: Client Error
+          description: Too Early
         '500':
           description: Internal Server Error
         '401':
diff --git a/test/Altinn.App.Common.Tests/Altinn.App.Common.Tests.csproj b/test/Altinn.App.Common.Tests/Altinn.App.Common.Tests.csproj
index 7f7a5d128..58f1708b0 100644
--- a/test/Altinn.App.Common.Tests/Altinn.App.Common.Tests.csproj
+++ b/test/Altinn.App.Common.Tests/Altinn.App.Common.Tests.csproj
@@ -19,7 +19,7 @@
     <PackageReference Include="Microsoft.Extensions.Diagnostics.Testing" Version="9.0.0" />
     <PackageReference Include="Verify.Xunit" Version="28.4.0" />
     <PackageReference Include="FluentAssertions" Version="7.0.0" />
-    <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="3.5.0" />
+    <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="4.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="xunit" Version="2.9.2" />
diff --git a/test/Altinn.App.Core.Tests/Altinn.App.Core.Tests.csproj b/test/Altinn.App.Core.Tests/Altinn.App.Core.Tests.csproj
index 44ad8649b..15f1579f1 100644
--- a/test/Altinn.App.Core.Tests/Altinn.App.Core.Tests.csproj
+++ b/test/Altinn.App.Core.Tests/Altinn.App.Core.Tests.csproj
@@ -45,7 +45,7 @@
     <PackageReference Include="Microsoft.Extensions.TimeProvider.Testing" Version="9.0.0" />
     <PackageReference Include="Verify.Xunit" Version="28.4.0" />
     <PackageReference Include="FluentAssertions" Version="7.0.0" />
-    <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="3.5.0" />
+    <PackageReference Include="Microsoft.FeatureManagement.AspNetCore" Version="4.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="xunit" Version="2.9.2" />