diff --git a/src/Altinn.App.Api/Altinn.App.Api.csproj b/src/Altinn.App.Api/Altinn.App.Api.csproj
index bf078d632..773ff5aed 100644
--- a/src/Altinn.App.Api/Altinn.App.Api.csproj
+++ b/src/Altinn.App.Api/Altinn.App.Api.csproj
@@ -17,7 +17,7 @@
   <ItemGroup>
     <PackageReference Include="Altinn.Common.PEP" Version="4.1.0" />
     <PackageReference Include="Altinn.Platform.Storage.Interface" Version="4.0.3" />
-    <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 816034dd0..6fbd84099 100644
--- a/src/Altinn.App.Core/Altinn.App.Core.csproj
+++ b/src/Altinn.App.Core/Altinn.App.Core.csproj
@@ -20,7 +20,7 @@
     <PackageReference Include="JWTCookieAuthentication" Version="3.0.1" />
     <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.Common.Tests/Altinn.App.Common.Tests.csproj b/test/Altinn.App.Common.Tests/Altinn.App.Common.Tests.csproj
index f513d5746..7f453ccc1 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="8.10.0" />
     <PackageReference Include="Verify.Xunit" Version="28.3.1" />
     <PackageReference Include="FluentAssertions" Version="6.12.2" />
-    <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="17.11.1" />
     <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 825de07cc..c8c19af90 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="8.10.0" />
     <PackageReference Include="Verify.Xunit" Version="28.3.1" />
     <PackageReference Include="FluentAssertions" Version="6.12.2" />
-    <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="17.11.1" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="xunit" Version="2.9.2" />