diff --git a/tox.ini b/tox.ini
index fe784567..e099f9c7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,18 +1,18 @@
 [tox]
-envlist = py{36,37}, py37-build_docs
+envlist = py{36,37}, build_docs
 
 [testenv]
 setenv = 
     MPLBACKEND = agg
 passenv = CC
-extras = test
+extras = tests
 deps = 
     git+https://github.com/Cadair/astropy@dkist
     git+https://github.com/spacetelescope/asdf
     git+https://github.com/Cadair/gwcs@dkist
     git+https://github.com/sunpy/sunpy
     git+https://github.com/sunpy/ndcube
-commands = pytest --cov=./dkist
+commands = py{36,37}: pytest --cov=./dkist
 
 [testenv:build_docs]
 basepython = python3.7