diff --git a/.github/scripts/ljspeech/TTS/run-matcha.sh b/.github/scripts/ljspeech/TTS/run-matcha.sh
index 5da9fac57..b6eb81020 100755
--- a/.github/scripts/ljspeech/TTS/run-matcha.sh
+++ b/.github/scripts/ljspeech/TTS/run-matcha.sh
@@ -80,9 +80,6 @@ function export_onnx() {
   curl -SL -O https://huggingface.co/csukuangfj/icefall-tts-ljspeech-matcha-en-2024-10-28/resolve/main/data/cmvn.json
   popd
 
-  curl -SL -O https://github.com/csukuangfj/models/raw/refs/heads/master/hifigan/generator_v2
-  curl -SL -O https://github.com/csukuangfj/models/raw/refs/heads/master/hifigan/generator_v3
-
   ./matcha/export_onnx.py \
     --exp-dir ./matcha/exp \
     --epoch 4000 \
@@ -93,9 +90,13 @@ function export_onnx() {
 
   if false; then
     # THe CI machine does not have enough memory to run it
+    #
+    curl -SL -O https://github.com/csukuangfj/models/raw/refs/heads/master/hifigan/generator_v1
+    curl -SL -O https://github.com/csukuangfj/models/raw/refs/heads/master/hifigan/generator_v2
+    curl -SL -O https://github.com/csukuangfj/models/raw/refs/heads/master/hifigan/generator_v3
     python3 ./matcha/export_onnx_hifigan.py
   else
-    curl -SL -O https://huggingface.co/csukuangfj/icefall-tts-ljspeech-matcha-en-2024-10-28/resolve/main/exp/hifigan_v2.onnx
+    curl -SL -O https://huggingface.co/csukuangfj/icefall-tts-ljspeech-matcha-en-2024-10-28/resolve/main/exp/hifigan_v1.onnx
   fi
 
   ls -lh *.onnx
@@ -103,13 +104,13 @@ function export_onnx() {
 
     python3 ./matcha/onnx_pretrained.py \
      --acoustic-model ./model-steps-6.onnx \
-     --vocoder ./hifigan_v2.onnx \
+     --vocoder ./hifigan_v1.onnx \
      --tokens ./data/tokens.txt \
      --input-text "how are you doing?" \
-     --output-wav /icefall/generated-matcha-tts-6.wav
+     --output-wav /icefall/generated-matcha-tts-steps-6-v1.wav
 
   ls -lh /icefall/*.wav
-  soxi /icefall/generated-matcha-tts-6.wav
+  soxi /icefall/generated-matcha-tts-steps-6-v1.wav
 }
 
 prepare_data
diff --git a/egs/ljspeech/TTS/matcha/LICENSE b/egs/ljspeech/TTS/matcha/LICENSE
new file mode 100644
index 000000000..858018e75
--- /dev/null
+++ b/egs/ljspeech/TTS/matcha/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 Shivam Mehta
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/egs/ljspeech/TTS/matcha/audio.py b/egs/ljspeech/TTS/matcha/audio.py
index 0a9b8db2a..534331e59 100644
--- a/egs/ljspeech/TTS/matcha/audio.py
+++ b/egs/ljspeech/TTS/matcha/audio.py
@@ -1,3 +1,5 @@
+# This file is copied from
+# https://github.com/shivammehta25/Matcha-TTS/blob/main/matcha/utils/audio.py
 import numpy as np
 import torch
 import torch.utils.data
diff --git a/egs/ljspeech/TTS/matcha/export_onnx.py b/egs/ljspeech/TTS/matcha/export_onnx.py
index f7dc38c1b..487ea2995 100755
--- a/egs/ljspeech/TTS/matcha/export_onnx.py
+++ b/egs/ljspeech/TTS/matcha/export_onnx.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+# Copyright         2024  Xiaomi Corp.        (authors: Fangjun Kuang)
 
 """
 This script exports a Matcha-TTS model to ONNX.
diff --git a/egs/ljspeech/TTS/matcha/export_onnx_hifigan.py b/egs/ljspeech/TTS/matcha/export_onnx_hifigan.py
index ea4435479..63d1fac20 100755
--- a/egs/ljspeech/TTS/matcha/export_onnx_hifigan.py
+++ b/egs/ljspeech/TTS/matcha/export_onnx_hifigan.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+# Copyright         2024  Xiaomi Corp.        (authors: Fangjun Kuang)
 
 import logging
 from pathlib import Path
diff --git a/egs/ljspeech/TTS/matcha/inference.py b/egs/ljspeech/TTS/matcha/inference.py
index 1189160f6..64abd8e50 100755
--- a/egs/ljspeech/TTS/matcha/inference.py
+++ b/egs/ljspeech/TTS/matcha/inference.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+# Copyright         2024  Xiaomi Corp.        (authors: Fangjun Kuang)
 
 import argparse
 import datetime as dt
diff --git a/egs/ljspeech/TTS/matcha/model.py b/egs/ljspeech/TTS/matcha/model.py
index a488ab4e8..6539ffc24 100644
--- a/egs/ljspeech/TTS/matcha/model.py
+++ b/egs/ljspeech/TTS/matcha/model.py
@@ -1,3 +1,5 @@
+# This file is copied from
+# https://github.com/shivammehta25/Matcha-TTS/blob/main/matcha/utils/model.py
 """ from https://github.com/jaywalnut310/glow-tts """
 
 import numpy as np
diff --git a/egs/ljspeech/TTS/matcha/models/README.md b/egs/ljspeech/TTS/matcha/models/README.md
new file mode 100644
index 000000000..1099ef3c8
--- /dev/null
+++ b/egs/ljspeech/TTS/matcha/models/README.md
@@ -0,0 +1,3 @@
+# Introduction
+Files in this folder are copied from
+https://github.com/shivammehta25/Matcha-TTS/tree/main/matcha/models
diff --git a/egs/ljspeech/TTS/matcha/monotonic_align/__init__.py b/egs/ljspeech/TTS/matcha/monotonic_align/__init__.py
index 58286bdd4..85e275fd0 100644
--- a/egs/ljspeech/TTS/matcha/monotonic_align/__init__.py
+++ b/egs/ljspeech/TTS/matcha/monotonic_align/__init__.py
@@ -1,3 +1,5 @@
+# Copied from
+# https://github.com/shivammehta25/Matcha-TTS/blob/main/matcha/utils/monotonic_align/__init__.py
 import numpy as np
 import torch
 
diff --git a/egs/ljspeech/TTS/matcha/monotonic_align/core.pyx b/egs/ljspeech/TTS/matcha/monotonic_align/core.pyx
index 091fcc3a5..eabc7f273 100644
--- a/egs/ljspeech/TTS/matcha/monotonic_align/core.pyx
+++ b/egs/ljspeech/TTS/matcha/monotonic_align/core.pyx
@@ -1,3 +1,5 @@
+# Copied from
+# https://github.com/shivammehta25/Matcha-TTS/blob/main/matcha/utils/monotonic_align/core.pyx
 import numpy as np
 
 cimport cython
diff --git a/egs/ljspeech/TTS/matcha/monotonic_align/setup.py b/egs/ljspeech/TTS/matcha/monotonic_align/setup.py
index 6092e20d2..e406d6786 100644
--- a/egs/ljspeech/TTS/matcha/monotonic_align/setup.py
+++ b/egs/ljspeech/TTS/matcha/monotonic_align/setup.py
@@ -1,3 +1,5 @@
+# Copied from
+# https://github.com/shivammehta25/Matcha-TTS/blob/main/matcha/utils/monotonic_align/setup.py
 from distutils.core import setup
 from Cython.Build import cythonize
 import numpy
diff --git a/egs/ljspeech/TTS/matcha/onnx_pretrained.py b/egs/ljspeech/TTS/matcha/onnx_pretrained.py
index 6a37f3c17..be34343d3 100755
--- a/egs/ljspeech/TTS/matcha/onnx_pretrained.py
+++ b/egs/ljspeech/TTS/matcha/onnx_pretrained.py
@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+# Copyright         2024  Xiaomi Corp.        (authors: Fangjun Kuang)
+
 import argparse
 import datetime as dt
 import logging
diff --git a/egs/ljspeech/TTS/matcha/train.py b/egs/ljspeech/TTS/matcha/train.py
index ce13e7e42..5e713fdfd 100755
--- a/egs/ljspeech/TTS/matcha/train.py
+++ b/egs/ljspeech/TTS/matcha/train.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright         2023  Xiaomi Corp.        (authors: Fangjun Kuang)
+# Copyright         2024  Xiaomi Corp.        (authors: Fangjun Kuang)
 
 
 import argparse