diff --git a/tox.ini b/tox.ini
index b3f32249..c3390d45 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,7 +22,8 @@ deps =
     cov: mock
 
 commands =
-    pytest --pyargs '{toxinidir}' {posargs}
-    cov: pytest --pyargs '{toxinidir}' --cov goodman_pipeline {posargs}
+    pip freeze
+    python -m pytest --pyargs '{toxinidir}' {posargs}
+    cov: python -m pytest --pyargs '{toxinidir}' --cov goodman_pipeline {posargs}
     cov: coverage xml -o '{toxinidir}/coverage.xml'
     html: coverage html -d .coverage_html
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