diff --git a/Procfile b/Procfile
new file mode 100644
index 0000000..1945201
--- /dev/null
+++ b/Procfile
@@ -0,0 +1 @@
+web: gunicorn main:app
diff --git a/api.py b/api.py
index 5450eaf..9081198 100644
--- a/api.py
+++ b/api.py
@@ -2,7 +2,8 @@
 from flask_restful import Api
 
 from endpoints import (
-    EPUserLogin, EPQuestPostList, EPQuestPostGet, EPQuestPostPublish, EPQuestPostEdit, EPQuestPostIDCheck
+    EPRootTest, EPUserLogin,
+    EPQuestPostList, EPQuestPostGet, EPQuestPostPublish, EPQuestPostEdit, EPQuestPostIDCheck
 )
 from responses import Error500Response
 
@@ -26,6 +27,7 @@ def attach_api(app):
 
 def attach_endpoints(api_app):
     """Attach API endpoints to Flask app."""
+    api_app.add_resource(EPRootTest, "/", endpoint="misc.root")
     api_app.add_resource(EPUserLogin, "/user/login", endpoint="user.login")
     api_app.add_resource(EPQuestPostList, "/posts/quest", endpoint="posts.quest.list")
     api_app.add_resource(EPQuestPostGet, "/posts/quest/get", endpoint="posts.quest.get")
diff --git a/endpoints/__init__.py b/endpoints/__init__.py
index c0f4261..9d67d17 100644
--- a/endpoints/__init__.py
+++ b/endpoints/__init__.py
@@ -6,4 +6,5 @@
     EPQuestPostEdit,
     EPQuestPostIDCheck
 )
+from .root import EPRootTest
 from .user import EPUserLogin, EPUserLoginParam
diff --git a/endpoints/root.py b/endpoints/root.py
new file mode 100644
index 0000000..0a5c25d
--- /dev/null
+++ b/endpoints/root.py
@@ -0,0 +1,13 @@
+"""Endpoints at the root. Serve as a status checking endpoint."""
+from responses import RootTestResponse, ResponseCodeCollection
+
+from .base import EndpointBase
+
+__all__ = ("EPRootTest",)
+
+
+class EPRootTest(EndpointBase):
+    """Endpoint at the root path of the app."""
+
+    def get(self):  # pylint: disable=no-self-use, missing-function-docstring
+        return RootTestResponse(ResponseCodeCollection.SUCCESS), 200
diff --git a/main.py b/main.py
index 98cbac6..c8c6da7 100644
--- a/main.py
+++ b/main.py
@@ -37,4 +37,4 @@ class AppConfig:
 # pylint: enable=fixme
 
 if __name__ == "__main__":
-    app.run(debug=True)
+    app.run(threaded=True)
diff --git a/requirements.txt b/requirements.txt
index b6cef38..8676706 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,6 @@
+# Web server
+gunicorn
+
 # Web framework
 flask
 flask-CORS
diff --git a/responses/body/__init__.py b/responses/body/__init__.py
index 7c6f21d..3e1c00d 100644
--- a/responses/body/__init__.py
+++ b/responses/body/__init__.py
@@ -8,4 +8,5 @@
     QuestPostEditSuccessResponse, QuestPostEditFailedResponse,
     QuestPostIDCheckResponse
 )
+from .root import RootTestResponse
 from .user import UserLoginResponse
diff --git a/responses/body/root.py b/responses/body/root.py
new file mode 100644
index 0000000..7e9ea4d
--- /dev/null
+++ b/responses/body/root.py
@@ -0,0 +1,8 @@
+"""Response body for the root endpoint."""
+from .basic import Response
+
+__all__ = ("RootTestResponse",)
+
+
+class RootTestResponse(Response):
+    """Response body for the root endpoint."""
diff --git a/runtime.txt b/runtime.txt
new file mode 100644
index 0000000..f72c511
--- /dev/null
+++ b/runtime.txt
@@ -0,0 +1 @@
+python-3.9.0
diff --git a/tests/test_endpoints.py b/tests/test_endpoints.py
index 9d2ab43..9dca44f 100644
--- a/tests/test_endpoints.py
+++ b/tests/test_endpoints.py
@@ -4,6 +4,17 @@
 from responses import ResponseCodeCollection, QuestPostListResponseKey
 
 
+def test_root(client):
+    r = client.get(url_for("misc.root"))
+
+    assert r.status_code == 200
+
+    response = r.json
+
+    assert response[QuestPostListResponseKey.CODE] == ResponseCodeCollection.SUCCESS.code
+    assert response[QuestPostListResponseKey.SUCCESS]
+
+
 def test_user_login(client):
     r = client.post(
         url_for("user.login"),
@@ -17,7 +28,8 @@ def test_user_login(client):
 
     response = r.json
 
-    assert response[QuestPostListResponseKey.CODE] in (100, 101)
+    assert response[QuestPostListResponseKey.CODE] \
+           in (ResponseCodeCollection.SUCCESS.code, ResponseCodeCollection.SUCCESS_NEW.code)
     assert response[QuestPostListResponseKey.SUCCESS]