diff --git a/src/Runner.Listener/SelfUpdater.cs b/src/Runner.Listener/SelfUpdater.cs
index e2f0b2b58..f6556ac2d 100644
--- a/src/Runner.Listener/SelfUpdater.cs
+++ b/src/Runner.Listener/SelfUpdater.cs
@@ -1060,6 +1060,8 @@ namespace GitHub.Runner.Listener
                                               arguments: $"\"{hashFilesScript.Replace("\"", "\\\"")}\"",
                                               environment: env,
                                               requireExitCodeZero: false,
+                                              outputEncoding: null,
+                                              killProcessOnCancel: true,
                                               cancellationToken: token);
 
                 if (exitCode != 0)