diff --git a/lidar_pipeline/pipeline.py b/lidar_pipeline/pipeline.py
index 533be08..510deb5 100644
--- a/lidar_pipeline/pipeline.py
+++ b/lidar_pipeline/pipeline.py
@@ -11,7 +11,7 @@ import logging
 import multiprocessing
 import shutil
 import time
-from concurrent.futures import ProcessPoolExecutor, as_completed
+from concurrent.futures import ProcessPoolExecutor, as_completed, TimeoutError as FuturesTimeoutError
 from datetime import datetime
 from pathlib import Path
 import subprocess
@@ -589,27 +589,32 @@ class LidarArchaeoPipeline:
                 done = 0
                 t_deadline = time.time() + 7200
                 try:
-                    for future in as_completed(future_to_file):
-                        if time.time() > t_deadline:
-                            logger.error("Délai dépassé (2h) — annulation des workers restants")
-                            for f in future_to_file:
-                                f.cancel()
-                            break
-                        laz_file = future_to_file[future]
-                        done += 1
-                        try:
-                            success = future.result()
-                            results[laz_file.name] = success
-                            status = "✓" if success else "✗"
-                            logger.info(f"  [{done}/{len(files)}] {status} {laz_file.name}")
-                            if success and self.incremental_index:
-                                self._rebuild_index_incremental()
-                        except Exception as e:
-                            logger.error(f"  [{done}/{len(files)}] ✗ {laz_file.name}: {e}")
-                            logger.debug(f"  Traceback:", exc_info=True)
-                            report_event(self.output_dir, _file_basename(laz_file),
-                                         "tile", "fail", detail=str(e))
-                            results[laz_file.name] = False
+                    # timeout= : sans lui, as_completed bloque entre deux
+                    # complétions et le délai de 2 h n'est jamais évalué si
+                    # aucun worker ne rend la main (run figé pour toujours).
+                    try:
+                        futures_iter = as_completed(future_to_file,
+                                                    timeout=max(1.0, t_deadline - time.time()))
+                        for future in futures_iter:
+                            laz_file = future_to_file[future]
+                            done += 1
+                            try:
+                                success = future.result()
+                                results[laz_file.name] = success
+                                status = "✓" if success else "✗"
+                                logger.info(f"  [{done}/{len(files)}] {status} {laz_file.name}")
+                                if success and self.incremental_index:
+                                    self._rebuild_index_incremental()
+                            except Exception as e:
+                                logger.error(f"  [{done}/{len(files)}] ✗ {laz_file.name}: {e}")
+                                logger.debug(f"  Traceback:", exc_info=True)
+                                report_event(self.output_dir, _file_basename(laz_file),
+                                             "tile", "fail", detail=str(e))
+                                results[laz_file.name] = False
+                    except FuturesTimeoutError:
+                        logger.error("Délai dépassé (2h) — annulation des workers restants")
+                        for f in future_to_file:
+                            f.cancel()
                 except KeyboardInterrupt:
                     logger.info("Interruption — annulation des travaux en cours...")
                     for f in future_to_file: