diff --git a/py/src/routes/videos.py b/py/src/routes/videos.py
index 73fef46..f2e898d 100644
--- a/py/src/routes/videos.py
+++ b/py/src/routes/videos.py
@@ -108,7 +108,7 @@ def upload_video():
     # Annotate the video (add bounding boxes and overlay data)
     overlay_path = f"{PROCESSED_OVERLAY_DIR}/overlay_{video_id}.json"
     output_path = f"{PROCESSED_DATA_DIR}/videos_with_nametags/{video_filename}.mp4"
-    model_path = f"{MODELS_DIR}/YOLOv11/{group_name}/hackv4i.pt"
+    model_path = f"{MODELS_DIR}/YOLOv11/{group_name}/hackv11i.pt"
     annotate_video(uploaded_video_path, output_path, overlay_path, model_path)
 
     # TODO: FIX ME.
diff --git a/py/src/services/train_yolo_model/incremental_learning.py b/py/src/services/train_yolo_model/incremental_learning.py
index a04b0bc..a77738e 100644
--- a/py/src/services/train_yolo_model/incremental_learning.py
+++ b/py/src/services/train_yolo_model/incremental_learning.py
@@ -48,10 +48,11 @@ def update_model_with_additional_dataset(DATASETS_DIR, MODELS_DIR, group):
         key=lambda x: os.path.getctime(os.path.join(runs_dir, x)),
     )
     best_pt_path = os.path.join(runs_dir, latest_train_dir, "weights", "best.pt")
+    output_path = os.path.join(models_dir, "hackv11i.pt")
 
     if os.path.exists(best_pt_path):
-        shutil.copy(best_pt_path, models_dir)
-        print(f"best.pt を {best_pt_path} から {models_dir} にコピーしました。")
+        shutil.copy(best_pt_path, output_path)
+        print(f"best.pt を {best_pt_path} から {output_path} にコピーしました。")
     else:
         print("best.pt ファイルが見つかりませんでした。")