diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index 7c1d26c4..bc2f6416 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -5,12 +5,11 @@ on: [push]
 jobs:
   build:
 
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     strategy:
       max-parallel: 4
       matrix:
-        python-version: [3.6, 3.7]
-        runs-on: [ubuntu-latest, macOS-latest, windows-latest]
+        python-version: [2.7, 3.5, 3.6, 3.7]
 
     steps:
     - uses: actions/checkout@v1
@@ -18,5 +17,18 @@ jobs:
       uses: actions/setup-python@v1
       with:
         python-version: ${{ matrix.python-version }}
-    - name: make test
-      run: pytest     
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+    - name: Lint with flake8
+      run: |
+        pip install flake8
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+    - name: Test with pytest
+      run: |
+        pip install pytest
+        pytest