diff --git a/.gitignore b/.gitignore
index 33dfc28..36f6607 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,5 @@ __pycache__
 dist/
 build/
 /.tox
+.hypothesis
+.cache
diff --git a/.travis.yml b/.travis.yml
index 5ee9ae1..f28a830 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,6 @@ env:
   - TWISTED_RELEASE="twisted"
   - TWISTED_RELEASE="twisted==16.0.0"
 
-install: pip install $TWISTED_RELEASE -e .
+install: pip install $TWISTED_RELEASE -e .[tests]
 
 script: python -m unittest discover
diff --git a/setup.py b/setup.py
index e5bf8a6..5d3147c 100755
--- a/setup.py
+++ b/setup.py
@@ -27,6 +27,9 @@ setup(
         'twisted>=16.0',
         'autobahn>=0.12',
     ],
+    extras_require={
+        'tests': ['hypothesis', 'tox']
+    },
     entry_points={'console_scripts': [
         'daphne = daphne.cli:CommandLineInterface.entrypoint',
     ]},
diff --git a/tox.ini b/tox.ini
index 7554262..63d2bd0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,6 +3,7 @@
 envlist = py{27,34,35}-twisted-{old,new}
 
 [testenv]
+extras = tests
 deps =
     twisted-old: twisted==16.0.0
 commands = python -m unittest discover