diff --git a/tox.ini b/tox.ini
index 774ace8..9ebb03e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,6 +21,17 @@ deps = -rtox-requirements.txt
 commands =
     python setup.py test -a "-v --cov ramlfications --cov-report term-missing"
 
+; experiment to see if pypy tests run faster on Travis without coverage
+[testenv:pypy]
+basepython = pypy
+setenv =
+    PYTHONHASHSEED = 0
+    LC_ALL=en_US.utf-8
+    LANG=en_US.utf-8
+deps = -rtox-requirements.txt
+commands =
+    python setup.py test
+
 [testenv:flake8]
 basepython = python2.7
 deps =