diff --git a/test-requirements.txt b/test-requirements.txt
index 8a2bd6e..e38b371 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,6 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-stestr>=2.0.0 # Apache-2.0
-testtools>=2.2.0 # MIT
+pytest
+pytest-cov
 flake8
+pyyaml
diff --git a/tox.ini b/tox.ini
index 74aa87e..f494a78 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,7 +9,7 @@ usedevelop = True
 setenv =
    PYTHONWARNINGS=default::DeprecationWarning
 deps = -r{toxinidir}/test-requirements.txt
-commands = stestr run {posargs}
+commands = pytest {posargs}
 
 [testenv:pep8]
 commands = flake8 {posargs}