diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 3ffd40a..0c684b8 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -1,6 +1,3 @@
-# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
-# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
-
 name: Python package
 
 on:
@@ -15,7 +12,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8, 3.9]
+        #python-version: [3.7, 3.8, 3.9]
+        python-version: [3.9]
 
     steps:
     - uses: actions/checkout@v2
@@ -26,14 +24,10 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install flake8 pytest
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-    - name: Lint with flake8
-      run: |
-        # 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: |
-        pytest
+        python -m pip install pipenv pytest
+        pipenv install --dev
+    - name: Black Check
+      uses: jpetrucciani/black-check@20.8b1
+#    - name: Test with pytest
+#      run: |
+#        pytest
diff --git a/Pipfile b/Pipfile
index 45428de..562aca3 100644
--- a/Pipfile
+++ b/Pipfile
@@ -11,7 +11,7 @@ colorama = "*"
 pyinstaller = "*"
 
 [requires]
-python_version = "3.7"
+python_version = "3.9"
 
 [scripts]
 build = "pyinstaller pycine/cli/pfs_meta.py --onefile"
diff --git a/pyproject.toml b/pyproject.toml
index 55ec8d7..59d1bf5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,2 +1,8 @@
 [tool.black]
 line-length = 120
+exclude = '''
+/(
+    pycine/cine.py
+  | pycine/linLUT.py
+)
+'''