diff --git a/.github/workflows/python-tests.yml b/.github/workflows/python-tests.yml
new file mode 100644
index 00000000..faeed100
--- /dev/null
+++ b/.github/workflows/python-tests.yml
@@ -0,0 +1,36 @@
+name: tests
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '.github/workflows/python-tests.yml'
+      - '**.py'
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+          architecture: x64
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip setuptools
+          pip install --progress-bar off .[lint]
+      - run: flake8 . --show-source
+      - run: black --check .
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+          architecture: x64
+      - name: Install dependencies
+        run: pip install --progress-bar off .
+      - run: python setup.py test
diff --git a/README.md b/README.md
index 67b42266..a6d20670 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # optuna-dashboard
 
+![tests](https://github.com/c-bata/optuna-dashboard/workflows/tests/badge.svg)
+
 Real-time dashboard for [Optuna](https://github.com/optuna/optuna).
 Code files were originally taken from [Goptuna](https://github.com/c-bata/goptuna).