diff --git a/README.md b/README.md
index 901ef80eb2..60bbb32366 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,7 @@ Volunteer-maintained projects that may be used to execute Test262 in various ECM
 - https://github.com/test262-utils/test262-harness-py (platform: Python)
 - https://bakkot.github.io/test262-web-runner/ (platform: web)
 - https://github.com/Izhido/test262_harness_cpp (platform: C++)
+- https://github.com/lahma/test262-harness-dotnet (platform: .NET)
 
 
 ### How To Read CI Results