diff --git a/.gitignore b/.gitignore
index 3a53f0494..15da71cf2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,7 +30,6 @@ subunit.log
 !/.gitreview
 !/.mailmap
 !/.pylintrc
-!/.testr.conf
 !/.zuul.yaml
 !/.stestr.conf
 
diff --git a/.testr.conf b/.testr.conf
deleted file mode 100644
index 149ff134e..000000000
--- a/.testr.conf
+++ /dev/null
@@ -1,4 +0,0 @@
-[DEFAULT]
-test_command=OS_STDOUT_CAPTURE=1 OS_STDERR_CAPTURE=1 OS_LOG_CAPTURE=1 ${PYTHON:-python} -m subunit.run discover -t ./ ${OS_TEST_PATH:-./neutron_fwaas/tests/unit} $LISTOPT $IDOPTION
-test_id_option=--load-list $IDFILE
-test_list_option=--list
diff --git a/lower-constraints.txt b/lower-constraints.txt
index ab00cdab8..80cedb19a 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -58,7 +58,6 @@ openstacksdk==0.11.2
 os-client-config==1.28.0
 os-ken==0.3.0
 os-service-types==1.2.0
-os-testr==1.0.0
 os-xenapi==0.3.1
 osc-lib==1.8.0
 oslo.cache==1.26.0
diff --git a/test-requirements.txt b/test-requirements.txt
index e0f78bf03..524587a8d 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,7 +9,6 @@ mock>=2.0.0 # BSD
 python-subunit>=1.0.0 # Apache-2.0/BSD
 requests-mock>=1.2.0 # Apache-2.0
 oslo.concurrency>=3.26.0 # Apache-2.0
-os-testr>=1.0.0 # Apache-2.0
 stestr>=1.0.0 # Apache-2.0
 testresources>=2.0.0 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT
diff --git a/tools/ostestr_compat_shim.sh b/tools/ostestr_compat_shim.sh
deleted file mode 100755
index a483ed1a1..000000000
--- a/tools/ostestr_compat_shim.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/bin/sh
-
-# preserve old behavior of using an arg as a regex when '--' is not present
-case $@ in
-  (*--*) ostestr $@;;
-  ('') ostestr;;
-  (*) ostestr --regex "$@"
-esac
diff --git a/tox.ini b/tox.ini
index 93f58f2f5..90dc1661b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,6 +6,9 @@ skipsdist = True
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
          PYTHONWARNINGS=default::DeprecationWarning
+         OS_LOG_CAPTURE={env:OS_LOG_CAPTURE:true}
+         OS_STDOUT_CAPTURE={env:OS_STDOUT_CAPTURE:true}
+         OS_STDERR_CAPTURE={env:OS_STDERR_CAPTURE:true}
 usedevelop = True
 deps = -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt}
        -r{toxinidir}/requirements.txt