diff --git a/tests/test_integration.py b/tests/test_integration.py
index 068e1cc8..6aa23fab 100644
--- a/tests/test_integration.py
+++ b/tests/test_integration.py
@@ -48,7 +48,15 @@ def sampleproject_dist(tmp_path_factory: pytest.TempPathFactory):
     run([sys.executable, "-m", "build", "--sdist"], cwd=checkout)
 
     [dist, *_] = (checkout / "dist").glob("*")
-    assert dist.name == f"twine-sampleproject-3.0.0.post{tag}.tar.gz"
+    # NOTE: newer versions of setuptools (invoked via build) adhere to PEP 625,
+    # causing the dist name to be `twine_sampleproject` instead of
+    # `twine-sampleproject`. Both are allowed here for now, but the hyphenated
+    # version can be removed eventually.
+    # See: https://github.com/pypa/setuptools/issues/3593
+    assert dist.name in (
+        f"twine-sampleproject-3.0.0.post{tag}.tar.gz",
+        f"twine_sampleproject-3.0.0.post{tag}.tar.gz",
+    )
 
     return dist
 
diff --git a/tox.ini b/tox.ini
index c9c9ae01..9dd7b847 100644
--- a/tox.ini
+++ b/tox.ini
@@ -79,13 +79,17 @@ commands =
 [testenv:types]
 deps =
     mypy
-    lxml
+    # required for report generation. 5.2.1 is forbidden due to an observed
+    # broken wheel on CPython 3.8:
+    # https://bugs.launchpad.net/lxml/+bug/2064158
+    lxml >= 5.2.0, != 5.2.1
     # required for more thorough type declarations
     keyring >= 22.3
     # consider replacing with `mypy --install-types` when
     # https://github.com/python/mypy/issues/10600 is resolved
     types-requests
 commands =
+    pip list
     mypy --html-report mypy --txt-report mypy {posargs:twine}
     python -c 'with open("mypy/index.txt") as f: print(f.read())'