diff --git a/.github/workflows/tests-lab-4.yml b/.github/workflows/tests-lab-4.yml
new file mode 100644
index 0000000..17e58f7
--- /dev/null
+++ b/.github/workflows/tests-lab-4.yml
@@ -0,0 +1,37 @@
+name: Tests - lab 4
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    # Check all PR
+
+jobs:
+  tests:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-22.04
+            python-version: "3.11"
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Install Firefox
+      uses: browser-actions/setup-firefox@latest
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - run: pip install tox
+
+    - name: run Python tests
+      run: tox -e tests-lab-4
+
+    - name: run Python tests for coverage
+      run: tox -e coverage
+    - uses: codecov/codecov-action@v3
+      with:
+        files: coverage.xml
+        verbose: true