diff --git a/.travis.yml b/.travis.yml
index 7bd8fa7..c68da13 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,17 +14,13 @@ python:
 
 before_install:
   - sudo apt-get install -y git mercurial
-  - sudo bash setup_travis.sh
-
+  - sudo bash build_wheel_on_travis.sh
 
 install:
   - pip install $(cat requirements-test.txt)
-  - python3.7 -m pip install lib3to6
-  - python3.7 setup.py bdist_wheel --python-tag=py2.py3
 
 script:
   - python --version
-  - python3.7 --version
   - python -m flake8 src/pycalver/
 
   - export MYPYPATH=stubs/
diff --git a/build_wheel_on_travis.sh b/build_wheel_on_travis.sh
new file mode 100644
index 0000000..87efdac
--- /dev/null
+++ b/build_wheel_on_travis.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+if [ $(which python3.7) ]; then
+    python3.7 --version
+else
+    curl -sSf -o python-3.7.tar.bz2 https://s3.amazonaws.com/travis-python-archives/binaries/ubuntu/16.04/x86_64/python-3.7.tar.bz2
+    tar xjf python-3.7.tar.bz2 --directory /
+    source $HOME/virtualenv/python3.7.0/bin/activate
+fi
+
+python3.7 --version
+python3.7 -m pip install lib3to6
+python3.7 setup.py bdist_wheel --python-tag=py2.py3
diff --git a/setup_travis.sh b/setup_travis.sh
deleted file mode 100644
index a40596f..0000000
--- a/setup_travis.sh
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/bash
-if [ $(which python3.7) ]; then
-    echo "installed"
-    exit 0
-fi
-
-
-echo $PAtH
-echo "installing"
-curl -sSf -o python-3.7.tar.bz2 https://s3.amazonaws.com/travis-python-archives/binaries/ubuntu/16.04/x86_64/python-3.7.tar.bz2
-tar xjf python-3.7.tar.bz2 --verbose --directory /
-ls -l /home/travis/virtualenv/
-which python3.7
-python --version
-
-# ln -s /home/travis/virtualenv/python3.7.0/bin/python
-