diff --git a/Elsa.SemanticKernel/Elsa.SemanticKernel.csproj b/Elsa.SemanticKernel/Elsa.SemanticKernel.csproj
index 8b4fb761f..c6f15a6e7 100644
--- a/Elsa.SemanticKernel/Elsa.SemanticKernel.csproj
+++ b/Elsa.SemanticKernel/Elsa.SemanticKernel.csproj
@@ -9,7 +9,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Elsa" Version="3.0.0-rc1" />
+        <PackageReference Include="Elsa" Version="3.0.0-preview.541" />
         <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="7.0.0" />
         <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="7.0.0" />
         <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="7.0.0" />
diff --git a/Elsa.SemanticKernel/NuGet.Config b/Elsa.SemanticKernel/NuGet.Config
index a89a1e8b5..5d2144320 100644
--- a/Elsa.SemanticKernel/NuGet.Config
+++ b/Elsa.SemanticKernel/NuGet.Config
@@ -3,7 +3,7 @@
   <packageSources>
     <clear/>
 
-    <add key="NuGet official package source" value="https://api.nuget.org/v3/index.json" />
+    <!--add key="NuGet official package source" value="https://api.nuget.org/v3/index.json" /-->
     <add key="Jint prereleases" value="https://www.myget.org/F/jint/api/v3/index.json" />
     <add key="Elsa prereleases" value="https://f.feedz.io/elsa-workflows/elsa-3/nuget/index.json" />
   </packageSources>
diff --git a/WorkflowsApp/NuGet.Config b/WorkflowsApp/NuGet.Config
index a89a1e8b5..5d2144320 100644
--- a/WorkflowsApp/NuGet.Config
+++ b/WorkflowsApp/NuGet.Config
@@ -3,7 +3,7 @@
   <packageSources>
     <clear/>
 
-    <add key="NuGet official package source" value="https://api.nuget.org/v3/index.json" />
+    <!--add key="NuGet official package source" value="https://api.nuget.org/v3/index.json" /-->
     <add key="Jint prereleases" value="https://www.myget.org/F/jint/api/v3/index.json" />
     <add key="Elsa prereleases" value="https://f.feedz.io/elsa-workflows/elsa-3/nuget/index.json" />
   </packageSources>
diff --git a/WorkflowsApp/Program.cs b/WorkflowsApp/Program.cs
index 221c2ff10..1e83d307e 100644
--- a/WorkflowsApp/Program.cs
+++ b/WorkflowsApp/Program.cs
@@ -1,6 +1,7 @@
 using Elsa.EntityFrameworkCore.Extensions;
 using Elsa.EntityFrameworkCore.Modules.Management;
 using Elsa.Extensions;
+using Elsa.Workflows.Core.Models;
 using Elsa.Identity.Features;
 using Elsa.SemanticKernel;
 
diff --git a/WorkflowsApp/WorkflowsApp.csproj b/WorkflowsApp/WorkflowsApp.csproj
index e11e47aa5..d5e4e63e7 100644
--- a/WorkflowsApp/WorkflowsApp.csproj
+++ b/WorkflowsApp/WorkflowsApp.csproj
@@ -7,13 +7,19 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Elsa" Version="3.0.0-rc1" />
+    <PackageReference Include="Elsa" Version="3.0.0-preview.541" />
+    <PackageReference Include="Elsa.EntityFrameworkCore" Version="3.0.0-preview.541" />
+    <PackageReference Include="Elsa.EntityFrameworkCore.Sqlite" Version="3.0.0-preview.541" />
+    <PackageReference Include="Elsa.Http" Version="3.0.0-preview.541" />
+    <PackageReference Include="Elsa.Identity" Version="3.0.0-preview.541" />
+    <PackageReference Include="Elsa.Workflows.Api" Version="3.0.0-preview.541" />
+    <PackageReference Include="Elsa.Workflows.Designer" Version="3.0.0-preview.541" /><!-- 
     <PackageReference Include="Elsa.EntityFrameworkCore" Version="3.0.0-rc1" />
     <PackageReference Include="Elsa.EntityFrameworkCore.Sqlite" Version="3.0.0-rc1" />
     <PackageReference Include="Elsa.Http" Version="3.0.0-rc1" />
     <PackageReference Include="Elsa.Identity" Version="3.0.0-rc1" />
     <PackageReference Include="Elsa.Workflows.Api" Version="3.0.0-rc1" />
-    <PackageReference Include="Elsa.Workflows.Designer" Version="3.0.0-rc1" />
+    <PackageReference Include="Elsa.Workflows.Designer" Version="3.0.0-rc1" /> -->
   </ItemGroup>
 
   <ItemGroup>