diff --git a/model_demos/cv_demos/yolo_v3/holli_src/utils.py b/model_demos/cv_demos/yolo_v3/holli_src/utils.py
index 52182992..22b0a4f7 100644
--- a/model_demos/cv_demos/yolo_v3/holli_src/utils.py
+++ b/model_demos/cv_demos/yolo_v3/holli_src/utils.py
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (c) 2018 Olli Huotari
+# SPDX-License-Identifier: MIT
+
 import math
 
 import numpy as np
diff --git a/model_demos/cv_demos/yolo_v3/holli_src/yolo_layer.py b/model_demos/cv_demos/yolo_v3/holli_src/yolo_layer.py
index ddd4a268..38f06c69 100644
--- a/model_demos/cv_demos/yolo_v3/holli_src/yolo_layer.py
+++ b/model_demos/cv_demos/yolo_v3/holli_src/yolo_layer.py
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (c) 2018 Olli Huotari
+# SPDX-License-Identifier: MIT
+
 import math
 
 import numpy as np
diff --git a/model_demos/cv_demos/yolo_v3/holli_src/yolov3.py b/model_demos/cv_demos/yolo_v3/holli_src/yolov3.py
index 10b303c9..bbb7d7e7 100644
--- a/model_demos/cv_demos/yolo_v3/holli_src/yolov3.py
+++ b/model_demos/cv_demos/yolo_v3/holli_src/yolov3.py
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (c) 2018 Olli Huotari
+# SPDX-License-Identifier: MIT
+
 import torch
 import torch.nn as nn
 
diff --git a/model_demos/cv_demos/yolo_v3/holli_src/yolov3_base.py b/model_demos/cv_demos/yolo_v3/holli_src/yolov3_base.py
index 87ecca92..52fe290c 100644
--- a/model_demos/cv_demos/yolo_v3/holli_src/yolov3_base.py
+++ b/model_demos/cv_demos/yolo_v3/holli_src/yolov3_base.py
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (c) 2018 Olli Huotari
+# SPDX-License-Identifier: MIT
+
 import importlib
 from abc import ABCMeta, abstractmethod
 from collections import OrderedDict, defaultdict
diff --git a/model_demos/cv_demos/yolo_v3/holli_src/yolov3_tiny.py b/model_demos/cv_demos/yolo_v3/holli_src/yolov3_tiny.py
index 7e87202f..51eac62d 100644
--- a/model_demos/cv_demos/yolo_v3/holli_src/yolov3_tiny.py
+++ b/model_demos/cv_demos/yolo_v3/holli_src/yolov3_tiny.py
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright (c) 2018 Olli Huotari
+# SPDX-License-Identifier: MIT
+
 import torch
 import torch.nn as nn
 
diff --git a/model_demos/cv_demos/yolo_v3/pytorch_yolov3_holli.py b/model_demos/cv_demos/yolo_v3/pytorch_yolov3_holli.py
index 7ad23780..79d0c0a9 100644
--- a/model_demos/cv_demos/yolo_v3/pytorch_yolov3_holli.py
+++ b/model_demos/cv_demos/yolo_v3/pytorch_yolov3_holli.py
@@ -1,5 +1,5 @@
-# SPDX-FileCopyrightText: Copyright (c) 2018 Olli Huotari
-# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: © 2024 Tenstorrent AI ULC
+# SPDX-License-Identifier: Apache-2.0
 
 import os
 
diff --git a/model_demos/cv_demos/yolo_v3/pytorch_yolov3_holli_1x1.py b/model_demos/cv_demos/yolo_v3/pytorch_yolov3_holli_1x1.py
index 1859f1d7..2ad56048 100644
--- a/model_demos/cv_demos/yolo_v3/pytorch_yolov3_holli_1x1.py
+++ b/model_demos/cv_demos/yolo_v3/pytorch_yolov3_holli_1x1.py
@@ -1,5 +1,5 @@
-# SPDX-FileCopyrightText: Copyright (c) 2018 Olli Huotari
-# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: © 2024 Tenstorrent AI ULC
+# SPDX-License-Identifier: Apache-2.0
 
 import os
 
diff --git a/model_demos/cv_demos/yolo_v3/pytorch_yolov3_tiny_holli.py b/model_demos/cv_demos/yolo_v3/pytorch_yolov3_tiny_holli.py
index 3c85099a..5cc72dd0 100644
--- a/model_demos/cv_demos/yolo_v3/pytorch_yolov3_tiny_holli.py
+++ b/model_demos/cv_demos/yolo_v3/pytorch_yolov3_tiny_holli.py
@@ -1,5 +1,5 @@
-# SPDX-FileCopyrightText: Copyright (c) 2018 Olli Huotari
-# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: © 2024 Tenstorrent AI ULC
+# SPDX-License-Identifier: Apache-2.0
 
 import os