diff --git a/.travis.yml b/.travis.yml
index 41bc941e7..68e50f0a6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,13 @@
 # Enable container based builds
 sudo: false
+dist: xenial   # required for Python >= 3.7
 language: python
 
 matrix:
   include:
+    - python: 3.7
+      env:
+        - TOXENV=py37
     - python: 3.6
       env:
         - TOXENV=py36
diff --git a/DEVELOPMENT_GUIDE.rst b/DEVELOPMENT_GUIDE.rst
index 0c9c4fada..c9f0d0294 100755
--- a/DEVELOPMENT_GUIDE.rst
+++ b/DEVELOPMENT_GUIDE.rst
@@ -17,10 +17,8 @@ steps manually.
 
 1. Install Python Versions
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
-Python 2.7 is our officially supported Python version. We have a future goal to support to Python3.6 but the code base
-currently does not work with Python3. To make future migration easier, any new code we write must be compatible with
-Python3. Follow the idioms from this `excellent cheatsheet`_ to make sure your code is compatible with both Python
-versions.
+Our officially supported Python versions are 2.7, 3.6, and 3.7. Follow the idioms from this `excellent cheatsheet`_ to
+make sure your code is compatible with both Python 2.7 and 3 versions.
 
 Setup Python locally using `pyenv`_
 
diff --git a/tox.ini b/tox.ini
index 637b5707a..7a4d5af96 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py27, py36
+envlist = py27, py36, py37
 
 [testenv:py27]
 # Set this environment variable **only** for Python2.7. In Py >= 3.3, the hash seed property was set to a random