diff --git a/README.md b/README.md
index c89e700..dc31630 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ XUnit Gui written in WPF
 
 Fork of [xunit.runner.wpf](https://www.nuget.org/packages/xunit.runner.wpf).
 
-This fork, uses the [AssemblyRunner](xunit.v3.runner.utility) of xunit.v3.runner.utility to run the tests so that the external dlls are loaded via reflection in the same AppDomain.
+This fork, uses the [AssemblyRunner](https://github.com/xunit/xunit/blob/main/src/xunit.v3.runner.utility/Runners/AssemblyRunner.cs) of xunit.v3.runner.utility to run the tests so that the external dlls are loaded via reflection in the same AppDomain.
 This is necessary when running unit tests of code hosted by external applications (Revit etc).
 
 NuGet package: https://www.nuget.org/packages/speckle.xunit.runner.wpf/