diff --git a/.github/workflows/pull_request_test.yml b/.github/workflows/pull_request_test.yml
index 7d80588..0642fd9 100644
--- a/.github/workflows/pull_request_test.yml
+++ b/.github/workflows/pull_request_test.yml
@@ -9,32 +9,29 @@ jobs:
   build_manylinux:
     name: Build for manylinux
     runs-on: ubuntu-latest
-    strategy:
-      max-parallel: 4
-      matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8]
+    container:
+      image: docker://quay.io/pypa/manylinux1_x86_64
 
-    steps:
-    - name: Use docker
-      uses: docker://quay.io/pypa/manylinux1_x86_64
+    steps:        
     - uses: actions/checkout@v1
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v1
-      with:
-        python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
-        wget https://github.com/eigenteam/eigen-git-mirror/archive/3.3.7.tar.gz
-        tar -zxvf 3.3.7.tar.gz
-        mv eigen-git-mirror-3.3.7 include
-    - name: Build
+        git clone https://github.com/eigenteam/eigen-git-mirror
+        cd eigen-git-mirror
+        git checkout tags/3.3.7
+        cd ..
+        mv eigen-git-mirror include
+    - name: Deploy
+      env:
+        TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
+        TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
       run: |
-        python setup.py build install
-    - name: Test
-      run: |
-        python -m pip install pytest
-        python -m pytest test/unit_test.py
+        for cp in cp34-cp34m cp35-cp35m cp36-cp36m cp37-cp37m cp38-cp38
+        do
+          /opt/python/${cp}/bin/python -m pip install pytest
+          /opt/python/${cp}/bin/python setup.py build install
+          /opt/python/${cp}/bin/python -m pytest test/unit_test.py
+        done
 
   build_macos:
     name: Build for macOS