diff --git a/apps/dh/api-dh/source/DataHub.WebApi.Tests/DataHub.WebApi.Tests.csproj b/apps/dh/api-dh/source/DataHub.WebApi.Tests/DataHub.WebApi.Tests.csproj
index dfbeedb8d3..b1c1eac7e7 100644
--- a/apps/dh/api-dh/source/DataHub.WebApi.Tests/DataHub.WebApi.Tests.csproj
+++ b/apps/dh/api-dh/source/DataHub.WebApi.Tests/DataHub.WebApi.Tests.csproj
@@ -31,8 +31,8 @@ limitations under the License.
 
   <ItemGroup>
     <PackageReference Include="WireMock.Net" Version="1.5.13" />
-    <PackageReference Include="Energinet.DataHub.Core.TestCommon" Version="4.0.0" />
-    <PackageReference Include="Energinet.DataHub.Core.FunctionApp.TestCommon" Version="4.0.0" />
+    <PackageReference Include="Energinet.DataHub.Core.TestCommon" Version="4.0.2" />
+    <PackageReference Include="Energinet.DataHub.Core.FunctionApp.TestCommon" Version="4.0.2" />
     <PackageReference Include="Energinet.DataHub.MeteringPoints.Client" Version="3.0.1" />
     <PackageReference Include="FluentAssertions" Version="6.8.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="6.0.12" />
diff --git a/apps/dh/api-dh/source/DataHub.WebApi.Tests/Integration/Controllers/MarketParticipantControllerTests.cs b/apps/dh/api-dh/source/DataHub.WebApi.Tests/Integration/Controllers/MarketParticipantControllerTests.cs
index 92b2a764fa..6d6032a69b 100644
--- a/apps/dh/api-dh/source/DataHub.WebApi.Tests/Integration/Controllers/MarketParticipantControllerTests.cs
+++ b/apps/dh/api-dh/source/DataHub.WebApi.Tests/Integration/Controllers/MarketParticipantControllerTests.cs
@@ -72,7 +72,7 @@ public async Task GetFilteredActors_NotFas_ReturnsSingleActor(OrganizationDto or
                 .ReturnsAsync(organizations);
 
             MarketParticipantClientMock
-                .Setup(client => client.GetActorsAsync(organization.OrganizationId))
+                .Setup(client => client.GetActorsAsync())
                 .ReturnsAsync(actors);
 
             MarketParticipantClientMock
@@ -118,7 +118,7 @@ public async Task GetFilteredActors_IsFas_ReturnsAllActors(OrganizationDto organ
                 .ReturnsAsync(organizations);
 
             MarketParticipantClientMock
-                .Setup(client => client.GetActorsAsync(organization.OrganizationId))
+                .Setup(client => client.GetActorsAsync())
                 .ReturnsAsync(actors);
 
             MarketParticipantClientMock
diff --git a/apps/dh/api-dh/source/DataHub.WebApi/Controllers/MarketParticipantController.cs b/apps/dh/api-dh/source/DataHub.WebApi/Controllers/MarketParticipantController.cs
index cfec1a9aae..09e3da594c 100644
--- a/apps/dh/api-dh/source/DataHub.WebApi/Controllers/MarketParticipantController.cs
+++ b/apps/dh/api-dh/source/DataHub.WebApi/Controllers/MarketParticipantController.cs
@@ -58,15 +58,19 @@ public Task<ActionResult<IEnumerable<OrganizationWithActorsDto>>> GetAllOrganiza
                     .GetOrganizationsAsync()
                     .ConfigureAwait(false);
 
-                var result = new List<OrganizationWithActorsDto>();
+                var allActors = await _client
+                    .GetActorsAsync()
+                    .ConfigureAwait(false);
+
+                var groupByOrganization = allActors.ToLookup(a => a.OrganizationId);
 
-                foreach (var organization in organizations)
+                var result = organizations.Select(organization =>
                 {
-                    var actors = await _client.GetActorsAsync(organization.OrganizationId);
-                    result.Add(new OrganizationWithActorsDto(organization, actors));
-                }
+                    var actors = groupByOrganization[organization.OrganizationId];
+                    return new OrganizationWithActorsDto(organization, actors);
+                });
 
-                return (IEnumerable<OrganizationWithActorsDto>)result;
+                return result;
             });
         }
 
@@ -121,17 +125,10 @@ public Task<ActionResult<IEnumerable<FilteredActorDto>>> GetFilteredActorsAsync(
                 var gridAreas = await _client.GetGridAreasAsync().ConfigureAwait(false);
                 var gridAreaLookup = gridAreas.ToDictionary(x => x.Id);
 
-                var organizations = await _client
-                    .GetOrganizationsAsync()
+                var actors = await _client
+                    .GetActorsAsync()
                     .ConfigureAwait(false);
 
-                var actors = new List<ActorDto>();
-
-                foreach (var organizationDto in organizations)
-                {
-                    actors.AddRange(await _client.GetActorsAsync(organizationDto.OrganizationId).ConfigureAwait(false));
-                }
-
                 var accessibleActors = actors
                     .Select(x =>
                         new FilteredActorDto(
diff --git a/apps/dh/api-dh/source/DataHub.WebApi/DataHub.WebApi.csproj b/apps/dh/api-dh/source/DataHub.WebApi/DataHub.WebApi.csproj
index 2299bf47d1..1fb9c724cd 100644
--- a/apps/dh/api-dh/source/DataHub.WebApi/DataHub.WebApi.csproj
+++ b/apps/dh/api-dh/source/DataHub.WebApi/DataHub.WebApi.csproj
@@ -55,9 +55,9 @@ limitations under the License.
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.21.0" />
     <PackageReference Include="Energinet.DataHub.Charges.Clients" Version="6.1.0" />
     <PackageReference Include="Energinet.DataHub.Charges.Clients.Registration" Version="6.1.0" />
-    <PackageReference Include="Energinet.DataHub.Core.App.Common.Security" Version="7.4.0" />
-    <PackageReference Include="Energinet.DataHub.Core.App.WebApp" Version="7.4.0" />
-    <PackageReference Condition="!Exists('$(MarketingParticipantProjectReference)')" Include="Energinet.DataHub.MarketParticipant.Client" Version="2.29.4" />
+    <PackageReference Include="Energinet.DataHub.Core.App.Common.Security" Version="7.4.1" />
+    <PackageReference Include="Energinet.DataHub.Core.App.WebApp" Version="7.4.1" />
+    <PackageReference Condition="!Exists('$(MarketingParticipantProjectReference)')" Include="Energinet.DataHub.MarketParticipant.Client" Version="2.29.6" />
     <PackageReference Condition="!Exists('$(MessageArchiveClientAbstractionsProjectReference)')" Include="Energinet.DataHub.MessageArchive.Client" Version="2.0.8" />
     <PackageReference Condition="!Exists('$(MessageArchiveClientProjectReference)')" Include="Energinet.DataHub.MessageArchive.Client.Abstractions" Version="2.0.8" />
     <PackageReference Include="Energinet.DataHub.MeteringPoints.Client" Version="3.0.1" />