diff --git a/test-requirements.txt b/test-requirements.txt
index 1b88a5b..cd989d7 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,6 +1,6 @@
 # Lint and unit test requirements
 flake8
-os-testr>=0.4.1
+stestr>=2.2.0
 requests>=2.18.4
 charms.reactive
 mock>=1.2
diff --git a/tox.ini b/tox.ini
index 44f8241..2733fa8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -35,12 +35,12 @@ commands = true
 [testenv:py35]
 basepython = python3.5
 deps = -r{toxinidir}/test-requirements.txt
-commands = ostestr {posargs}
+commands = stestr run {posargs}
 
 [testenv:py36]
 basepython = python3.6
 deps = -r{toxinidir}/test-requirements.txt
-commands = ostestr {posargs}
+commands = stestr run {posargs}
 
 [testenv:pep8]
 basepython = python3