diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..3951c97
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,41 @@
+name: CI (test)
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        python-version: ["3.9", "3.10", "3.11"]
+
+    runs-on: ubuntu-latest
+
+    defaults:
+      run:
+        working-directory: 01-ci-lab
+
+    steps:
+
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Setup python
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: pip install -r requirements.txt
+
+      - name: Run test
+        run: pytest 
+
+      - name: Run linter
+        run: flake8 .    
\ No newline at end of file
diff --git a/01-ci-lab/app/calculator.py b/01-ci-lab/app/calculator.py
index 7382287..c064e26 100644
--- a/01-ci-lab/app/calculator.py
+++ b/01-ci-lab/app/calculator.py
@@ -1,5 +1,6 @@
 def add(a, b):
     return a + b
 
+
 def divide(a, b):
-    return a / b
\ No newline at end of file
+    return a / b
diff --git a/01-ci-lab/tests/test_calculator.py b/01-ci-lab/tests/test_calculator.py
index 08c4a28..b3cc2ad 100644
--- a/01-ci-lab/tests/test_calculator.py
+++ b/01-ci-lab/tests/test_calculator.py
@@ -1,7 +1,9 @@
 from app.calculator import add, divide
 
+
 def test_add():
     assert add(2, 3) == 5
 
+
 def test_divide():
-    assert divide(10, 2) == 5
\ No newline at end of file
+    assert divide(10, 2) == 5