diff --git a/src/Altinn.App.Core/Models/ApplicationMetadata.cs b/src/Altinn.App.Core/Models/ApplicationMetadata.cs
index 24beaf62e..db28abbf0 100644
--- a/src/Altinn.App.Core/Models/ApplicationMetadata.cs
+++ b/src/Altinn.App.Core/Models/ApplicationMetadata.cs
@@ -1,3 +1,4 @@
+using System.Reflection;
using Altinn.Platform.Storage.Interface.Models;
using Newtonsoft.Json;
@@ -57,7 +58,13 @@ public ApplicationMetadata(string id)
///
[JsonProperty(PropertyName = "logo")]
public Logo? Logo { get; set; }
-
+
+ ///
+ /// Frontend sometimes need to have knowledge of the nuget package version for backwards compatibility
+ ///
+ [JsonProperty(PropertyName = "altinnNugetVersion")]
+ public string AltinnNugetVersion { get; set; } = typeof(ApplicationMetadata).Assembly!.GetName().Version!.ToString();
+
///
/// Holds properties that are not mapped to other properties
///
diff --git a/test/Altinn.App.Core.Tests/Internal/App/AppMedataTest.cs b/test/Altinn.App.Core.Tests/Internal/App/AppMedataTest.cs
index aefa1244b..84675dd8f 100644
--- a/test/Altinn.App.Core.Tests/Internal/App/AppMedataTest.cs
+++ b/test/Altinn.App.Core.Tests/Internal/App/AppMedataTest.cs
@@ -1,3 +1,4 @@
+using System.Reflection;
using System.Text.Json;
using Altinn.App.Core.Configuration;
using Altinn.App.Core.Internal.App;
@@ -482,8 +483,9 @@ public async Task GetApplicationMetadata_deserialize_serialize_unmapped_properti
AppSettings appSettings = GetAppSettings("AppMetadata", "unmapped-properties.applicationmetadata.json");
IAppMetadata appMetadata = SetupAppMedata(Options.Create(appSettings));
var appMetadataObj = await appMetadata.GetApplicationMetadata();
- string serialized = JsonSerializer.Serialize(appMetadataObj, new JsonSerializerOptions { WriteIndented = true });
+ string serialized = JsonSerializer.Serialize(appMetadataObj, new JsonSerializerOptions { WriteIndented = true, Encoder = System.Text.Encodings.Web.JavaScriptEncoder.UnsafeRelaxedJsonEscaping });
string expected = File.ReadAllText(Path.Join(appBasePath, "AppMetadata", "unmapped-properties.applicationmetadata.expected.json"));
+ expected = expected.Replace("--AltinnNugetVersion--", typeof(ApplicationMetadata).Assembly!.GetName().Version!.ToString());
serialized.Should().Be(expected);
}
diff --git a/test/Altinn.App.Core.Tests/Internal/App/TestData/AppMetadata/unmapped-properties.applicationmetadata.expected.json b/test/Altinn.App.Core.Tests/Internal/App/TestData/AppMetadata/unmapped-properties.applicationmetadata.expected.json
index de16c54b3..88b4be5b3 100644
--- a/test/Altinn.App.Core.Tests/Internal/App/TestData/AppMetadata/unmapped-properties.applicationmetadata.expected.json
+++ b/test/Altinn.App.Core.Tests/Internal/App/TestData/AppMetadata/unmapped-properties.applicationmetadata.expected.json
@@ -10,6 +10,7 @@
"Show": "select-instance"
},
"Logo": null,
+ "AltinnNugetVersion": "--AltinnNugetVersion--",
"VersionId": null,
"Org": "tdd",
"Title": {