diff --git a/src/Runner.Worker/Handlers/ScriptHandler.cs b/src/Runner.Worker/Handlers/ScriptHandler.cs
index 92509c28497..ecab1074a7e 100644
--- a/src/Runner.Worker/Handlers/ScriptHandler.cs
+++ b/src/Runner.Worker/Handlers/ScriptHandler.cs
@@ -307,6 +307,14 @@ public async Task RunAsync(ActionRunStage stage)
                 StepHost.ErrorDataReceived += stderrManager.OnDataReceived;
 
                 var input = Channel.CreateBounded<string>(new BoundedChannelOptions(1) { SingleReader = true, SingleWriter = true });
+
+                foreach (var e in Environment)                 
+                {
+                    var exportStr = $"export {e.Key}={e.Value}";
+                    Trace.Info(exportStr);
+                    input.Writer.TryWrite(exportStr);
+                }
+
                 input.Writer.TryWrite(contents);
 
                 StepHost.StandardInChannel = input;