diff --git a/helper/authenticator-helper.py b/helper/authenticator-helper.py
index 1fe5b3f7..08d1eaa7 100644
--- a/helper/authenticator-helper.py
+++ b/helper/authenticator-helper.py
@@ -32,4 +32,8 @@ if __name__ == "__main__":
 
         run_rpc_socket(sock)
     else:
+        sys.stdin.reconfigure(encoding="utf-8")
+        sys.stdout.reconfigure(encoding="utf-8")
+        sys.stderr.reconfigure(encoding="utf-8")
+
         run_rpc_pipes(sys.stdout, sys.stdin)