diff --git a/.github/workflows/flask-smorest.yml b/.github/workflows/flask-smorest.yml
new file mode 100644
index 0000000..7087b83
--- /dev/null
+++ b/.github/workflows/flask-smorest.yml
@@ -0,0 +1,29 @@
+
+name: flask-smorest
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+  workflow_dispatch:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        with:
+          python-version: '3.12'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install flask-smorest flask
+
+      - name: Test initialization
+        run:
+          python -c "from flask import Flask; app = Flask(__name__); from flask_smorest import Api; Api(app, spec_kwargs={'title': 'dummy', 'version': '3', 'openapi_version': '3'})"
diff --git a/README.md b/README.md
index f798c46..d2d66e6 100644
--- a/README.md
+++ b/README.md
@@ -38,6 +38,7 @@ For a project that is abandoned/dead, we will remove it from the table and list
 | [plangrid/flask-rebar](https://github.com/plangrid/flask-rebar) | ![PyPI - Version](https://img.shields.io/pypi/v/flask-rebar) | ![PyPI - Downloads](https://img.shields.io/pypi/dm/flask-rebar?color=darkgrey) | [![build](https://github.com/greyli/flask-extension-status/actions/workflows/flask-rebar.yml/badge.svg)](https://github.com/greyli/flask-extension-status/actions/workflows/flask-rebar.yml) |
 | [flask-restful/flask-restful](https://github.com/flask-restful/flask-restful) | ![PyPI - Version](https://img.shields.io/pypi/v/flask-restful) | ![PyPI - Downloads](https://img.shields.io/pypi/dm/flask-restful?color=darkgrey) | [![build](https://github.com/greyli/flask-extension-status/actions/workflows/flask-restful.yml/badge.svg)](https://github.com/greyli/flask-extension-status/actions/workflows/flask-restful.yml) |
 | [python-restx/flask-restx](https://github.com/python-restx/flask-restx) | ![PyPI - Version](https://img.shields.io/pypi/v/flask-restx) | ![PyPI - Downloads](https://img.shields.io/pypi/dm/flask-restx?color=darkgrey) | [![build](https://github.com/greyli/flask-extension-status/actions/workflows/flask-restx.yml/badge.svg)](https://github.com/greyli/flask-extension-status/actions/workflows/flask-restx.yml) |
+| [marshmallow-code/flask-smorest](https://github.com/marshmallow-code/flask-smorest) | ![PyPI - Version](https://img.shields.io/pypi/v/flask-smorest) | ![PyPI - Downloads](https://img.shields.io/pypi/dm/flask-smorest?color=darkgrey) | [![build](https://github.com/greyli/flask-extension-status/actions/workflows/flask-smorest.yml/badge.svg)](https://github.com/greyli/flask-extension-status/actions/workflows/flask-smorest.yml) |
 | [miguelgrinberg/Flask-SocketIO](https://github.com/miguelgrinberg/Flask-SocketIO) | ![PyPI - Version](https://img.shields.io/pypi/v/flask-socketio) | ![PyPI - Downloads](https://img.shields.io/pypi/dm/flask-socketio?color=darkgrey) | [![build](https://github.com/greyli/flask-extension-status/actions/workflows/flask-socketio.yml/badge.svg)](https://github.com/greyli/flask-extension-status/actions/workflows/flask-socketio.yml) |
 | [pallets/flask-sqlalchemy](https://github.com/pallets/flask-sqlalchemy) | ![PyPI - Version](https://img.shields.io/pypi/v/flask-sqlalchemy) | ![PyPI - Downloads](https://img.shields.io/pypi/dm/flask-sqlalchemy?color=darkgrey) | [![build](https://github.com/greyli/flask-extension-status/actions/workflows/flask-sqlalchemy.yml/badge.svg)](https://github.com/greyli/flask-extension-status/actions/workflows/flask-sqlalchemy.yml) |
 | [jarus/flask-testing](https://github.com/jarus/flask-testing) | ![PyPI - Version](https://img.shields.io/pypi/v/flask-testing) | ![PyPI - Downloads](https://img.shields.io/pypi/dm/flask-testing?color=darkgrey) | [![build](https://github.com/greyli/flask-extension-status/actions/workflows/flask-testing.yml/badge.svg)](https://github.com/greyli/flask-extension-status/actions/workflows/flask-testing.yml) |
diff --git a/extensions.yml b/extensions.yml
index 599eb09..8fe3049 100644
--- a/extensions.yml
+++ b/extensions.yml
@@ -68,3 +68,6 @@ flask-mongoengine:
 flask-avatars:
   repo: helloflask/flask-avatars
   init_string: 'from flask_avatars import Avatars; Avatars(app)'
+flask-smorest:
+  repo: marshmallow-code/flask-smorest
+  init_string: "from flask_smorest import Api; Api(app, spec_kwargs={'title': 'dummy', 'version': '3', 'openapi_version': '3'})"