diff --git a/.gitignore b/.gitignore
index 8e13e34..c7c6cf2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,7 @@
+.coverage
 .pytest_cache
 __pycache__
+coverage.xml
 dist
 examples/fake.*
 trio_websocket.egg-info
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..b5ab9b7
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,22 @@
+language: python
+
+git:
+  depth: 1
+
+matrix:
+  include:
+    - python: 3.5
+    - python: 3.6
+    - python: 3.7
+      dist: xenial
+      sudo: true
+
+install:
+  - pip install -e .[dev]
+
+script:
+  - pytest --cov=trio_websocket
+
+after_success:
+  - cat .coverage
+  - coveralls -v
diff --git a/README.md b/README.md
index 7aef9d9..139eb04 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
+[![PyPI](https://img.shields.io/pypi/v/trio-websocket.svg?style=flat-square)](https://pypi.org/project/trio-websocket/)
+![Python Versions](https://img.shields.io/pypi/pyversions/trio-websocket.svg?style=flat-square)
+![MIT License](https://img.shields.io/github/license/HyperionGray/trio-websocket.svg?style=flat-square)
+[![Build Status](https://img.shields.io/travis/HyperionGray/trio-websocket.svg?style=flat-square)](https://travis-ci.org/HyperionGray/trio-websocket)
+[![Coverage](https://img.shields.io/coveralls/github/HyperionGray/trio-websocket.svg?style=flat-square)](https://coveralls.io/github/HyperionGray/trio-websocket?branch=master)
+
 # Trio WebSocket
 
 This project implements [the WebSocket
@@ -8,7 +14,7 @@ implements the I/O using [Trio](https://trio.readthedocs.io/en/latest/).
 
 ## Installation
 
-To install from PyPI:
+`trio-websocket` requires Python v3.5 or greater. To install from PyPI:
 
     pip install trio-websocket
 
@@ -69,6 +75,32 @@ to each incoming message with an identical outgoing message.
 A longer example is in `examples/server.py`. **See the note above about using
 SSL with the example client.**
 
+## Unit Tests
+
+Unit tests are written in the pytest style. You must install the development
+dependencies as described in the installation section above. The
+``--cov=trio_websocket`` flag turns on code coverage.
+
+    $ pytest --cov=trio_websocket
+    === test session starts ===
+    platform linux -- Python 3.6.6, pytest-3.8.0, py-1.6.0, pluggy-0.7.1
+    rootdir: /home/mhaase/code/trio-websocket, inifile: pytest.ini
+    plugins: trio-0.5.0, cov-2.6.0
+    collected 21 items
+
+    tests/test_connection.py ..................... [100%]
+
+    --- coverage: platform linux, python 3.6.6-final-0 ---
+    Name                         Stmts   Miss  Cover
+    ------------------------------------------------
+    trio_websocket/__init__.py     297     40    87%
+    trio_websocket/_channel.py     140     52    63%
+    trio_websocket/version.py        1      0   100%
+    ------------------------------------------------
+    TOTAL                          438     92    79%
+
+    === 21 passed in 0.54 seconds ===
+
 ## Integration Testing with Autobahn
 
 The Autobahn Test Suite contains over 500 integration tests for WebSocket
diff --git a/setup.py b/setup.py
index bf88aba..54bc04b 100644
--- a/setup.py
+++ b/setup.py
@@ -29,20 +29,29 @@
         'Topic :: Software Development :: Libraries',
         'License :: OSI Approved :: MIT License',
         'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
     ],
+    python_requires=">=3.5",
     keywords='websocket client server trio',
     packages=find_packages(exclude=['docs', 'examples', 'tests']),
     install_requires=[
         'async_generator',
-        'attrs',
+        'attrs>=18.2',
         'ipaddress',
         'trio>=0.8',
         'wsaccel',
-        'wsproto',
+        'wsproto>=0.12.0',
         'yarl'
     ],
     extras_require={
-        'dev': ['pytest', 'pytest-trio', 'trustme'],
+        'dev': [
+            'coveralls',
+            'pytest>=3.6',
+            'pytest-cov',
+            'pytest-trio>=0.5.0',
+            'trustme',
+        ],
     },
     project_urls={
         'Bug Reports': 'https://github.com/HyperionGray/trio-websocket/issues',
diff --git a/tests/test_connection.py b/tests/test_connection.py
index 4c4b6ba..fb782f3 100644
--- a/tests/test_connection.py
+++ b/tests/test_connection.py
@@ -10,7 +10,7 @@
 import trustme
 
 
-HOST = 'localhost'
+HOST = '127.0.0.1'
 RESOURCE = '/resource'
 
 @pytest.fixture