diff --git a/test-requirements.txt b/test-requirements.txt
index 3d6178e..50c703f 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,5 +1,5 @@
 charms.reactive
-flake8>=2.2.4,<=2.4.1
+flake8>=2.2.4
 mock
-os-testr>=0.4.1
+stestr>=2.2.0
 git+https://github.com/openstack/charms.openstack.git#egg=charms.openstack
diff --git a/tox.ini b/tox.ini
index 49622c6..73e7aff 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,7 +10,7 @@ skip_missing_interpreters = False
 setenv = VIRTUAL_ENV={envdir}
          PYTHONHASHSEED=0
 install_command =  pip install {opts} {packages}
-commands = ostestr {posargs}
+commands = stestr run {posargs}
 
 [testenv:py3]
 basepython = python3