diff --git a/.travis.yml b/.travis.yml
index 7f9aafe..e19d76d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,28 +1,31 @@
+arch: amd64
 os: linux
-dist: focal
-language: python
-
-python:
-  - "3.8"
-  - "3.9"
-  - "3.10"
+dist: noble
+language: minimal
 
 services:
   - docker
+
 before_install:
+  - sudo apt-get -y install libxml2-dev
+  - sudo add-apt-repository -y ppa:deadsnakes
+  - sudo apt-get update
+  - sudo apt-get -y install python3.9 python3.10 python3.11 python3.12 python3.13
   - ssl/prepare-certs.sh
   # Use Docker rabbitmq instead of Travis'. Travis's gave us test failures
   # with our ChannelFull features, possibly because of feature differences.
+  - sudo service rabbitmq stop
   - docker pull rabbitmq:3.8.11-alpine
   - docker run --rm -d -p 5671:5671 -p 5672:5672 -v "/${TRAVIS_BUILD_DIR}"/ssl:/ssl -e RABBITMQ_SSL_CACERTFILE=/ssl/ca.cert -e RABBITMQ_SSL_CERTFILE=/ssl/server.cert -e RABBITMQ_SSL_KEYFILE=/ssl/server.key -e RABBITMQ_SSL_VERIFY=verify_peer -e RABBITMQ_SSL_FAIL_IF_NO_PEER_CERT=true rabbitmq:3.8.11-alpine
   # Now it'll start up while we're doing our install. There's a race, but
   # it's extremely likely rabbitmq will be up before pytest starts.
-  - python -m pip install poetry~=1.1.0 tox-travis
-install: poetry install -v
-script: tox
+  - python -m pip install poetry~=1.1.0 tox
 
 jobs:
   include:
+    - stage: test
+      install: poetry install -v
+      script: tox
     - stage: deploy
       python: "3.10"
       before_install: python -m pip install poetry
diff --git a/README.rst b/README.rst
index 0faa590..1f0482f 100644
--- a/README.rst
+++ b/README.rst
@@ -305,6 +305,27 @@ Now take on the development cycle:
 #. Write new code in ``channels_rabbitmq/`` to make the tests pass.
 #. Submit a pull request.
 
+If you have your local system RabbitMQ running on the same ports, use different ports starting the development RabbitMQ::
+
+    ssl/prepare-certs.sh  # Create SSL certificates used in tests
+    docker run --rm -it \
+         -p 5674:5671 \
+         -p 5675:5672 \
+         -p 15678:15672 \
+         -v "/$(pwd)"/ssl:/ssl \
+         -e RABBITMQ_SSL_CACERTFILE=/ssl/ca.cert \
+         -e RABBITMQ_SSL_CERTFILE=/ssl/server.cert \
+         -e RABBITMQ_SSL_KEYFILE=/ssl/server.key \
+         -e RABBITMQ_SSL_VERIFY=verify_peer \
+         -e RABBITMQ_SSL_FAIL_IF_NO_PEER_CERT=true \
+         rabbitmq:3.8.11-management-alpine
+
+(or whatever you would like to use)
+
+Then you need to pass the RabbitMQ endpoints explicitly in the environment::
+
+    AMQPS_HOST=amqps://guest:guest@localhost:5674 AMQP_HOST=amqp://guest:guest@localhost:5675 tox
+
 To deploy
 ~~~~~~~~~
 
diff --git a/channels_rabbitmq/core.py b/channels_rabbitmq/core.py
index d6d3db7..89444ff 100644
--- a/channels_rabbitmq/core.py
+++ b/channels_rabbitmq/core.py
@@ -208,9 +208,9 @@ def __init__(
         self._queue_name = "channels_{rand}".format(rand=_random_letters(12))
 
         self._multi_queue = MultiQueue(capacity=local_capacity)
-        self._carehare_connection: asyncio.Future[
-            carehare.Connection
-        ] = asyncio.Future()
+        self._carehare_connection: asyncio.Future[carehare.Connection] = (
+            asyncio.Future()
+        )
         self._want_close: bool = False
 
     @property
diff --git a/pyproject.toml b/pyproject.toml
index 85ffa1c..0b5c58a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,7 @@ legacy_tox_ini = """
 [tox]
 isolated_build = True
 skipsdist = True
-envlist = {py38,py39,py310}-{pyflakes,black,isort,pytest}
+envlist = {py39,py310,py311,py312,py313}-{pyflakes,black,isort,pytest}
 
 [flake8]
 exclude = venv/*,tox/*,specs/*,build/*
@@ -58,4 +58,7 @@ commands =
   black: black --check channels_rabbitmq tests
   isort: isort --check --diff channels_rabbitmq tests
   pytest: poetry run pytest --cov=channels_rabbitmq --cov-report term-missing -v
+setenv =
+  AMQPS_HOST={env:AMQPS_HOST:amqps://guest:guest@localhost}
+  AMQP_HOST={env:AMQP_HOST:amqp://guest:guest@localhost}
 """
diff --git a/tests/test_core.py b/tests/test_core.py
index ed70b4c..1e43a4b 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -1,5 +1,6 @@
 import asyncio
 import contextlib
+import os
 import ssl
 import threading
 import time
@@ -10,7 +11,8 @@
 
 from channels_rabbitmq.core import RabbitmqChannelLayer, ReconnectDelay
 
-HOST = "amqps://guest:guest@localhost"
+HOST = os.environ.get("AMQPS_HOST", "amqps://guest:guest@localhost")
+HOST2 = os.environ.get("AMQP_HOST", "amqp://guest:guest@localhost")
 SSL_CONTEXT = ssl.create_default_context(
     cafile=str(Path(__file__).parent.parent / "ssl" / "server.cert")
 )
@@ -527,9 +529,7 @@ async def test_no_ssl():
 
     Assumes the server is listening over both a TLS port and a no-TLS port.
     """
-    async with open_layer(
-        queue_name="x", host=HOST.replace("amqps://", "amqp://"), ssl_context=None
-    ) as layer:
+    async with open_layer(queue_name="x", host=HOST2, ssl_context=None) as layer:
         await layer.carehare_connection