diff --git a/lidar_pipeline/pipeline.py b/lidar_pipeline/pipeline.py
index 69929ae..96d4b96 100644
--- a/lidar_pipeline/pipeline.py
+++ b/lidar_pipeline/pipeline.py
@@ -332,7 +332,11 @@ class LidarArchaeoPipeline:
         try:
             if self.temp_dir.exists():
                 shutil.rmtree(self.temp_dir)
-                logger.info("  ✓ Fichiers temporaires supprimés")
+            # Also clean up per-file temp directories from parallel workers
+            for d in self.output_dir.glob("temp_*"):
+                if d.is_dir():
+                    shutil.rmtree(d, ignore_errors=True)
+            logger.info("  ✓ Fichiers temporaires supprimés")
         except Exception as e:
             logger.warning(f"  Note: Impossible de supprimer les fichiers temporaires: {e}")
 
@@ -358,4 +362,13 @@ def _process_file_standalone(laz_file_str, input_dir, output_dir, resolution, fo
     pipeline.temp_dir = pipeline.output_dir / f"temp_{basename}"
     pipeline.temp_dir.mkdir(exist_ok=True)
     laz_file = Path(laz_file_str)
-    return pipeline.process_file(laz_file)
\ No newline at end of file
+    result = pipeline.process_file(laz_file)
+
+    # Clean up per-file temp directory
+    try:
+        if pipeline.temp_dir.exists():
+            shutil.rmtree(pipeline.temp_dir)
+    except Exception:
+        pass
+
+    return result
\ No newline at end of file