diff --git a/CHANGELOG.md b/CHANGELOG.md
index a4aa0d4..9ec20a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Update timestamp in temp folder to hexadecimal.
 - Update test folder to temporarty the folder `RevitTest` to reduce the `PathTooLongException`. (Fix #48)
 - Update to use `ricaun.Revit.UI.Tasks` library to run async tests.
+- Update to use `ricaun.Revit.UI.Busy`library to check if revit is busy.
 ### Console
 - Throw exception when `RevitTestUtils` is empty.
 ### TestAdapter
diff --git a/Directory.Build.props b/Directory.Build.props
index 27836d9..1413108 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,5 +1,5 @@
 <Project>
 	<PropertyGroup>
-		<Version>1.3.5-beta.2</Version>
+		<Version>1.3.5-beta.3</Version>
 	</PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/README.old.md b/README.old.md
index 74e5641..5c78f2f 100644
--- a/README.old.md
+++ b/README.old.md
@@ -58,7 +58,7 @@ For more information see [Wiki](https://github.com/ricaun-io/ricaun.RevitTest/wi
 * [ricaun.NUnit](https://github.com/ricaun-io/ricaun.NUnit)
 * [ricaun.Revit.UI](https://github.com/ricaun-io/ricaun.Revit.UI)
 * [ricaun.Revit.UI.Tasks](https://github.com/ricaun-io/ricaun.Revit.UI.Tasks)
-* [Revit.Busy](https://github.com/ricaun-io/Revit.Busy)
+* [ricaun.Revit.UI.Busy](https://github.com/ricaun-io/ricaun.Revit.UI.Busy)
 * [ricaun.RevitTest.Shared](ricaun.RevitTest.Shared)
 #### Console
 * [ricaun.Revit.Installation](https://github.com/ricaun-io/ricaun.Revit.Installation)
diff --git a/ricaun.RevitTest.Application/Revit/App.cs b/ricaun.RevitTest.Application/Revit/App.cs
index 0bdb72c..91752e6 100644
--- a/ricaun.RevitTest.Application/Revit/App.cs
+++ b/ricaun.RevitTest.Application/Revit/App.cs
@@ -1,9 +1,9 @@
 using Autodesk.Revit.ApplicationServices;
 using Autodesk.Revit.DB;
 using Autodesk.Revit.UI;
-using Revit.Busy;
 using ricaun.NUnit;
 using ricaun.NUnit.Models;
+using ricaun.Revit.UI.Busy;
 using ricaun.Revit.UI.Tasks;
 using ricaun.Revit.UI;
 using ricaun.RevitTest.Application.Revit.Utils;
diff --git a/ricaun.RevitTest.Application/ricaun.RevitTest.Application.csproj b/ricaun.RevitTest.Application/ricaun.RevitTest.Application.csproj
index a86f56f..3a79802 100644
--- a/ricaun.RevitTest.Application/ricaun.RevitTest.Application.csproj
+++ b/ricaun.RevitTest.Application/ricaun.RevitTest.Application.csproj
@@ -111,9 +111,9 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Revit.Busy" Version="*" />
     <PackageReference Include="ricaun.Revit.UI" Version="*" />
     <PackageReference Include="ricaun.Revit.UI.Tasks" Version="*" />
+    <PackageReference Include="ricaun.Revit.UI.Busy" Version="*-*" />
     <PackageReference Include="ricaun.NUnit" Version="*" />
   </ItemGroup>