diff --git a/.github/workflows/nightly-tests-macos-cpu.yml b/.github/workflows/nightly-tests-macos-cpu.yml
deleted file mode 100644
index cfacbdb..0000000
--- a/.github/workflows/nightly-tests-macos-cpu.yml
+++ /dev/null
@@ -1,103 +0,0 @@
-# Copyright      2021  Xiaomi Corp.       (author: Fangjun Kuang)
-
-# See ../../LICENSE for clarification regarding multiple authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-name: Nightly tests macos cpu
-
-on:
-  push:
-    branches:
-      - nightly-test-2
-
-  schedule:
-    # minute (0-59)
-    # hour (0-23)
-    # day of the month (1-31)
-    # month (1-12)
-    # day of the week (0-6)
-    # nightly build at 23:50 UTC time every day
-    - cron: "50 23 * * *"
-
-jobs:
-  generate_build_matrix:
-    # see https://github.com/pytorch/pytorch/pull/50633
-    runs-on: ubuntu-latest
-    outputs:
-      matrix: ${{ steps.set-matrix.outputs.matrix }}
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-      - name: Generating build matrix
-        id: set-matrix
-        run: |
-          # outputting for debugging purposes
-          python scripts/github_actions/generate_build_matrix.py
-          MATRIX=$(python scripts/github_actions/generate_build_matrix.py)
-          echo "::set-output name=matrix::${MATRIX}"
-
-  run_nightly_tests_macos_cpu:
-    needs: generate_build_matrix
-    runs-on: macos-10.15
-    strategy:
-      fail-fast: true
-      matrix:
-        ${{ fromJson(needs.generate_build_matrix.outputs.matrix) }}
-
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-
-      - name: Setup Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Display Python version
-        run: python -c "import sys; print(sys.version)"
-
-      - name: Display clang version
-        run: |
-          clang --version
-
-      - name: Install PyTorch ${{ matrix.torch }}
-        shell: bash
-        run: |
-          python3 -m pip install -qq --upgrade pip
-          python3 -m pip install -qq wheel twine numpy typing_extensions
-          python3 -m pip install -qq torch==${{ matrix.torch }} numpy
-          python3 -m pip install -qq dataclasses soundfile
-
-          python3 -c "import torch; print('torch version:', torch.__version__)"
-
-      - name: Install from PyPI
-        shell: bash
-        run: |
-          export KALDIFEAT_MAKE_ARGS="-j 3"
-          pip install --verbose kaldifeat
-
-      - name: Run tests
-        shell: bash
-        run: |
-          lib_path=$(python -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())")
-          echo "lib_path: $lib_path"
-          ls -lh $lib_path
-          # export DYLD_LIBRARY_PATH=$lib_path:$DYLD_LIBRARY_PATH
-          otool -L $lib_path/_kaldifeat.*.so
-          otool -l $lib_path/_kaldifeat.*.so
-
-          cd kaldifeat/python/tests
-          make test