diff --git a/build.cake b/build.cake
index c1ad9a88b..4370ea0d4 100644
--- a/build.cake
+++ b/build.cake
@@ -11,7 +11,7 @@ static string[] VALID_CONFIGS = new [] { "Release", "Debug" };
 // NOTE: This must match what is actually referenced by
 // the GUI test model project. Hopefully, this is a temporary
 // fix, which we can get rid of in the future.
-const string REF_ENGINE_VERSION = "2.0.0-dev00017";
+const string REF_ENGINE_VERSION = "2.0.0-beta1";
 
 const string PACKAGE_NAME = "testcentric-gui";
 const string NUGET_PACKAGE_NAME = "TestCentric.GuiRunner";
diff --git a/src/TestModel/model/TestCentric.Gui.Model.csproj b/src/TestModel/model/TestCentric.Gui.Model.csproj
index fc8dfbf87..55f5400a4 100644
--- a/src/TestModel/model/TestCentric.Gui.Model.csproj
+++ b/src/TestModel/model/TestCentric.Gui.Model.csproj
@@ -16,8 +16,8 @@
 	<ItemGroup>
 		<PackageReference Include="Mono.Options" Version="6.12.0.148" />
 		<PackageReference Include="NUnit.Engine.Api" Version="3.16.2" />
-		<PackageReference Include="TestCentric.Engine.Api" Version="2.0.0-dev00017" />
-		<PackageReference Include="TestCentric.Engine" Version="2.0.0-dev00017" />
+		<PackageReference Include="TestCentric.Engine.Api" Version="2.0.0-beta1" />
+		<PackageReference Include="TestCentric.Engine" Version="2.0.0-beta1" />
 	</ItemGroup>
   
 </Project>
\ No newline at end of file