diff --git a/internal/engine/experiment.go b/internal/engine/experiment.go
index 053eb0a..7f62c56 100644
--- a/internal/engine/experiment.go
+++ b/internal/engine/experiment.go
@@ -131,6 +131,7 @@ func (eaw *experimentAsyncWrapper) RunAsync(
 			Input:              measurement.Input,
 			MeasurementRuntime: stop.Sub(start).Seconds(),
 			TestKeys:           measurement.TestKeys,
+			TestHelpers:        measurement.TestHelpers,
 		}
 	}()
 	return out, nil
@@ -180,6 +181,7 @@ func (e *Experiment) MeasureAsync(
 			measurement.Extensions = tk.Extensions
 			measurement.Input = tk.Input
 			measurement.MeasurementRuntime = tk.MeasurementRuntime
+			measurement.TestHelpers = tk.TestHelpers
 			measurement.TestKeys = tk.TestKeys
 			if err := measurement.Scrub(e.session.ProbeIP()); err != nil {
 				// If we fail to scrub the measurement then we are not going to
diff --git a/internal/model/experiment.go b/internal/model/experiment.go
index 1e8a8a3..b21d1c5 100644
--- a/internal/model/experiment.go
+++ b/internal/model/experiment.go
@@ -39,6 +39,9 @@ type ExperimentAsyncTestKeys struct {
 	// MeasurementRuntime is the total measurement runtime.
 	MeasurementRuntime float64
 
+	// TestHelpers contains the test helpers used in the experiment
+	TestHelpers map[string]interface{}
+
 	// TestKeys contains the actual test keys.
 	TestKeys interface{}
 }