diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..1fe2a83
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,29 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  pytest:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: pip
+          cache-dependency-path: requirements.txt
+
+      - name: Install dependencies
+        run: pip install -r requirements.txt
+
+      - name: Run tests
+        run: pytest --tb=short -q
diff --git a/README.md b/README.md
index b731102..3047796 100644
--- a/README.md
+++ b/README.md
@@ -107,6 +107,10 @@ claude-code-chat-browser/
 └── tests/
 ```
 
+## Continuous integration
+
+Every push and pull request runs **`pytest`** on **Ubuntu** (Python 3.12) via [`.github/workflows/ci.yml`](.github/workflows/ci.yml).
+
 ## Exported Markdown Format
 
 Each exported session includes: