diff --git a/.github/workflows/build_conda.yml b/.github/workflows/build_conda.yml
index 882ad72..bb6f427 100644
--- a/.github/workflows/build_conda.yml
+++ b/.github/workflows/build_conda.yml
@@ -40,7 +40,7 @@ jobs:
         id: set-matrix
         run: |
           # outputting for debugging purposes
-          python scripts/github_actions/generate_build_matrix.py
+          python scripts/github_actions/generate_build_matrix.py --enable-cuda
           MATRIX=$(python scripts/github_actions/generate_build_matrix.py --enable-cuda)
           echo "::set-output name=matrix::${MATRIX}"
 
diff --git a/.github/workflows/nightly-tests-ubuntu-cuda.yml b/.github/workflows/nightly-tests-ubuntu-cuda.yml
new file mode 100644
index 0000000..acb41cc
--- /dev/null
+++ b/.github/workflows/nightly-tests-ubuntu-cuda.yml
@@ -0,0 +1,115 @@
+# 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 ubuntu cuda
+
+on:
+  push:
+    branches:
+      - nightly-test
+
+jobs:
+  generate_build_matrix:
+    # see https://github.com/pytorch/pytorch/pull/50633
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Generating build matrix
+        id: set-matrix
+        run: |
+          # outputting for debugging purposes
+          python scripts/github_actions/generate_build_matrix.py --enable-cuda
+          MATRIX=$(python scripts/github_actions/generate_build_matrix.py --enable-cuda)
+          echo "::set-output name=matrix::${MATRIX}"
+
+  run_nightly_tests_ubuntu_cuda:
+    needs: generate_build_matrix
+    runs-on: ubuntu-18.04
+    strategy:
+      fail-fast: false
+      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: Install GCC 7
+        if: startsWith(matrix.os, 'ubuntu')
+        run: |
+          sudo apt-get install -y gcc-7 g++-7
+          echo "CC=/usr/bin/gcc-7" >> $GITHUB_ENV
+          echo "CXX=/usr/bin/g++-7" >> $GITHUB_ENV
+
+      - name: Install CUDA Toolkit ${{ matrix.cuda }}
+        if: startsWith(matrix.os, 'ubuntu')
+        shell: bash
+        env:
+          cuda: ${{ matrix.cuda }}
+        run: |
+          source ./scripts/github_actions/install_cuda.sh
+          echo "CUDA_HOME=${CUDA_HOME}" >> $GITHUB_ENV
+          echo "${CUDA_HOME}/bin" >> $GITHUB_PATH
+          echo "LD_LIBRARY_PATH=${CUDA_HOME}/lib:${CUDA_HOME}/lib64:${LD_LIBRARY_PATH}" >> $GITHUB_ENV
+
+      - name: Display NVCC version
+        if: startsWith(matrix.os, 'ubuntu')
+        run: |
+          which nvcc
+          nvcc --version
+
+      - name: Install PyTorch ${{ matrix.torch }}
+        env:
+          cuda: ${{ matrix.cuda }}
+          torch: ${{ matrix.torch }}
+        shell: bash
+        run: |
+          sudo apt update
+          sudo apt install libsndfile1-dev libsndfile1 ffmpeg
+          python3 -m pip install --upgrade pip
+          python3 -m pip install wheel twine typing_extensions soundfile
+          python3 -m pip install bs4 requests tqdm
+
+          ./scripts/github_actions/install_torch.sh
+          python3 -c "import torch; print('torch version:', torch.__version__)"
+
+      - name: Download cudnn 8.0
+        if: startsWith(matrix.os, 'ubuntu')
+        env:
+          cuda: ${{ matrix.cuda }}
+        run: |
+          ./scripts/github_actions/install_cudnn.sh
+
+      - name: Install from PyPI
+        shell: bash
+        run: |
+          pip install --verbose kaldifeat
+
+      - name: Run tests
+        shell: bash
+        run: |
+          cd kaldifeat/python/tests
+          make test
diff --git a/kaldifeat/python/tests/Makefile b/kaldifeat/python/tests/Makefile
new file mode 100644
index 0000000..20f98ff
--- /dev/null
+++ b/kaldifeat/python/tests/Makefile
@@ -0,0 +1,13 @@
+
+.PHONY: test
+test:
+	python3 ./test_fbank.py
+	python3 ./test_fbank_options.py
+	python3 ./test_frame_extraction_options.py
+	python3 ./test_mel_bank_options.py
+	python3 ./test_mfcc.py
+	python3 ./test_mfcc_options.py
+	python3 ./test_plp.py
+	python3 ./test_plp_options.py
+	python3 ./test_spectrogram.py
+	python3 ./test_spectrogram_options.py