diff --git a/scripts/run_tests_batched.py b/scripts/run_tests_batched.py
index 70369f76..d173178e 100644
--- a/scripts/run_tests_batched.py
+++ b/scripts/run_tests_batched.py
@@ -207,6 +207,14 @@ def _print_summary(results: list[tuple[Batch, int, float]]) -> int:
  return worst
 
 def main() -> int:
+ try:
+  sys.stdout.reconfigure(encoding="utf-8", errors="replace")
+ except Exception:
+  pass
+ try:
+  sys.stderr.reconfigure(encoding="utf-8", errors="replace")
+ except Exception:
+  pass
  p = argparse.ArgumentParser()
  p.add_argument("--tests-dir",      default=str(_PROJECT_ROOT / "tests"))
  p.add_argument("--registry",       default=str(_PROJECT_ROOT / "tests" / "test_categories.toml"))