diff --git a/datadog_checks_dev/CHANGELOG.md b/datadog_checks_dev/CHANGELOG.md
index 55b420c9eccb7..dc55aed849566 100644
--- a/datadog_checks_dev/CHANGELOG.md
+++ b/datadog_checks_dev/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+***Fixed***:
+
+* Stop using the TOX_ENV_NAME variable ([#15528](https://github.com/DataDog/integrations-core/pull/15528))
+
 ## 23.0.0 / 2023-08-10
 
 ***Changed***:
diff --git a/datadog_checks_dev/datadog_checks/dev/plugin/pytest.py b/datadog_checks_dev/datadog_checks/dev/plugin/pytest.py
index 80745fbe81bf2..4cbdaefd6ab68 100644
--- a/datadog_checks_dev/datadog_checks/dev/plugin/pytest.py
+++ b/datadog_checks_dev/datadog_checks/dev/plugin/pytest.py
@@ -160,7 +160,7 @@ def run_check(config=None, **kwargs):
             root = new_root
 
         python_path = os.environ[E2E_PARENT_PYTHON]
-        env = os.environ.get('TOX_ENV_NAME') or os.environ['HATCH_ENV_ACTIVE']
+        env = os.environ['HATCH_ENV_ACTIVE']
 
         # TODO: switch to `ddev` when the old CLI is gone
         check_command = [python_path, '-m', 'datadog_checks.dev', 'env', 'check', check, env, '--json']
diff --git a/datadog_checks_dev/datadog_checks/dev/tooling/testing.py b/datadog_checks_dev/datadog_checks/dev/tooling/testing.py
index 1e360e48f2d1c..04853517f04c6 100644
--- a/datadog_checks_dev/datadog_checks/dev/tooling/testing.py
+++ b/datadog_checks_dev/datadog_checks/dev/tooling/testing.py
@@ -553,9 +553,7 @@ def construct_pytest_options(
             # junit report file must contain the env name to handle multiple envs
             # $HATCH_ENV_ACTIVE is a Hatch injected variable
             # See https://hatch.pypa.io/latest/plugins/environment/reference/#hatch.env.plugin.interface.EnvironmentInterface.get_env_vars  # noqa
-            # $TOX_ENV_NAME is a tox injected variable
-            # See https://tox.readthedocs.io/en/latest/config.html#injected-environment-variables
-            f' --junit-xml=.junit/test-{test_group}-$HATCH_ENV_ACTIVE$TOX_ENV_NAME.xml'
+            f' --junit-xml=.junit/test-{test_group}-$HATCH_ENV_ACTIVE.xml'
             # Junit test results class prefix
             f' --junit-prefix={check}'
         )
diff --git a/datadog_checks_dev/datadog_checks/dev/utils.py b/datadog_checks_dev/datadog_checks/dev/utils.py
index 75f8cf2e6c755..0f093c0cb1dfc 100644
--- a/datadog_checks_dev/datadog_checks/dev/utils.py
+++ b/datadog_checks_dev/datadog_checks/dev/utils.py
@@ -27,7 +27,7 @@
 
 
 def get_active_env():
-    return os.environ.get('TOX_ENV_NAME') or os.environ['HATCH_ENV_ACTIVE']
+    return os.environ['HATCH_ENV_ACTIVE']
 
 
 def ensure_bytes(s):