diff --git a/.travis.yml b/.travis.yml
index 77bc1e5..a3627fd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,19 +1,13 @@
+sudo: false
 language: python
+cache:
+  directories:
+    - .tox
+    - tests/testdata
 python:
-#  - "2.6"  # 2.6 does not have collections.OrderedDict
   - "2.7"
-  - "3.2"
-  - "3.3"
-  - "3.4"
   - "3.5"
-  - "3.5-dev" # 3.5 development branch
-  - "3.6"
-  - "3.6-dev" # 3.6 development branch
-  - "3.7-dev" # 3.7 development branch
-  - "nightly" # currently points to 3.7-dev
-# command to install dependencies
-install: "pip install -r requirements.txt"
-install: "pip install nose"
-install: "sh get_testdata.sh"
-# command to run tests
-script: nosetests
+install:
+  - pip install tox-travis
+  - sh get_testdata.sh
+script: tox
diff --git a/get_testdata.sh b/get_testdata.sh
index e04d9a4..639930e 100755
--- a/get_testdata.sh
+++ b/get_testdata.sh
@@ -6,7 +6,7 @@
 mkdir -p tests/testdata
 cd tests/testdata
 
-/usr/bin/wget -i - <<END_FILELIST
+/usr/bin/wget --continue -i - <<END_FILELIST
 http://files.figshare.com/1778905/arbin1.res
 http://files.figshare.com/1778937/bio_logic2.mpt
 http://files.figshare.com/1778938/bio_logic5.mpt
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..09f70f4
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,5 @@
+[tox]
+envlist = py27,py35
+[testenv]
+deps=nose
+commands=nosetests