diff --git a/.travis.yml b/.travis.yml
index 71e608dc..b8acf996 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,10 @@
 language: python
-python:
-    - 2.7
-    - 3.4
-    - pypy
-script: ./run-tests.sh
+install:
+    - pip install tox
+script:
+    - tox
+env:
+    - TOXENV=py27
+    - TOXENV=py34
+    - TOXENV=pypy
+    - TOXENV=packaging
diff --git a/MANIFEST.in b/MANIFEST.in
index 74aebb43..a3812518 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1 +1,10 @@
 include README.md NOTICE.txt ChangeLog *.sh
+include Makefile
+include t
+include tox.ini
+
+recursive-include docs *.py
+recursive-include docs *.rst
+recursive-include docs Makefile
+recursive-include tests *.avro
+recursive-include tests *.py
diff --git a/tox.ini b/tox.ini
index 31701262..c38d7afe 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,8 +1,15 @@
 [tox]
-envlist = py27,py34,pypy
+envlist = py27,py34,pypy,packaging
 
 [testenv]
-deps = 
-    nose 
+deps =
+    nose
     flake8
 commands = ./run-tests.sh
+
+[testenv:packaging]
+skip_install = true
+deps =
+    check-manifest
+commands =
+    check-manifest