diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 01ab6ec..3e512e3 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -39,8 +39,13 @@ Before creating an issue please make sure that it was not already reported.
 #### Code
 
 1) Create a new branch based on `develop` branch.
+    * Optional: create and enable virtualenv:
+    ```
+    python3 -m venv myenv
+    source myenv/bin/activate
+    ```
 2) Fetch all dev dependencies.
-    * Install required python modules using `pip`: **python -m pip install .[testing]**
+    * Install required python modules using `pip`: **python -m pip install ".[testing]"**
 3) Ensure tests are ok by running them using [`pytest`](http://doc.pytest.org/en/latest/index.html).
 4) Add your changes.
 5) Follow [Black](https://black.readthedocs.io/en/stable/) code formatting.
diff --git a/httpx_auth/__init__.py b/httpx_auth/__init__.py
index b948ba1..2b2d41d 100644
--- a/httpx_auth/__init__.py
+++ b/httpx_auth/__init__.py
@@ -1,5 +1,6 @@
 from httpx_auth._authentication import (
     Basic,
+    BearerToken,
     HeaderApiKey,
     QueryApiKey,
     SupportMultiAuth,
@@ -46,6 +47,7 @@
 
 __all__ = [
     "Basic",
+    "BearerToken",
     "HeaderApiKey",
     "QueryApiKey",
     "OAuth2",
diff --git a/httpx_auth/_authentication.py b/httpx_auth/_authentication.py
index f251bff..0526752 100644
--- a/httpx_auth/_authentication.py
+++ b/httpx_auth/_authentication.py
@@ -61,6 +61,18 @@ def auth_flow(
         yield request
 
 
+class BearerToken(HeaderApiKey):
+    """Describes a Bearer Token requests authentication."""
+
+    def __init__(self, token: str):
+        """
+        :param token: The Bearer token that will be sent.
+        """
+        if not token:
+            raise Exception("Token is mandatory.")
+        super().__init__(f"Bearer {token}", "Authorization")
+
+
 class QueryApiKey(httpx.Auth, SupportMultiAuth):
     """Describes an API Key requests authentication."""
 
diff --git a/pyproject.toml b/pyproject.toml
index 9f68ced..6f240c1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,6 +43,7 @@ issues = "https://github.com/Colin-b/httpx_auth/issues"
 
 [project.optional-dependencies]
 testing = [
+    "pytest==8.3.4",
     # Used to generate test tokens
     "pyjwt==2.*",
     # Used to mock httpx
@@ -55,6 +56,11 @@ testing = [
     "pytest-asyncio==0.25.*",
 ]
 
+[tool.setuptools]
+py-modules = [
+    "httpx_auth"
+]
+
 [tool.setuptools.dynamic]
 version = {attr = "httpx_auth.version.__version__"}
 
@@ -62,5 +68,3 @@ version = {attr = "httpx_auth.version.__version__"}
 filterwarnings = [
     "error",
 ]
-# Silence deprecation warnings about option "asyncio_default_fixture_loop_scope"
-asyncio_default_fixture_loop_scope = "function"
diff --git a/pytest.ini b/pytest.ini
new file mode 100644
index 0000000..54462f5
--- /dev/null
+++ b/pytest.ini
@@ -0,0 +1,3 @@
+[pytest]
+asyncio_mode = auto
+asyncio_default_fixture_loop_scope = "function"
diff --git a/tests/bearer/__init__.py b/tests/bearer/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/bearer/test_bearer.py b/tests/bearer/test_bearer.py
new file mode 100644
index 0000000..2c5db3e
--- /dev/null
+++ b/tests/bearer/test_bearer.py
@@ -0,0 +1,23 @@
+from pytest_httpx import HTTPXMock
+import httpx
+import pytest
+
+import httpx_auth
+
+
+def test_bearer_requires_atoken():
+    with pytest.raises(Exception) as exception_info:
+        httpx_auth.BearerToken(None)
+    assert str(exception_info.value) == "Token is mandatory."
+
+def test_bearer_token_is_sent(httpx_mock: HTTPXMock):
+    auth = httpx_auth.BearerToken("my_token")
+
+    httpx_mock.add_response(
+        url="https://authorized_only",
+        method="GET",
+        match_headers={"Authorization": "Bearer my_token"},
+    )
+
+    with httpx.Client() as client:
+        client.get("https://authorized_only", auth=auth)