diff --git a/tox.ini b/tox.ini
index ae6ec72..1a356d6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,9 @@
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt
-commands = /bin/bash {toxinidir}/tools/run_tests.sh --unit
 whitelist_externals = /bin/bash
 
+[testenv:py27]
+commands =
+    /bin/bash {toxinidir}/tools/run_tests.sh --unit
+    /bin/bash {toxinidir}/tools/run_tests.sh --coverage