diff --git a/tests/convert/test_isatab2sra.py b/tests/convert/test_isatab2sra.py
index 1e03e019..0546fcba 100644
--- a/tests/convert/test_isatab2sra.py
+++ b/tests/convert/test_isatab2sra.py
@@ -114,7 +114,6 @@ def test_isatab2sra_dump_submission_xml_biis7(self):
             actual_submission_xml_biis7 = etree.fromstring(submission_xml)
             self.assertTrue(utils.assert_xml_equal(self._expected_submission_xml_biis7, actual_submission_xml_biis7))
 
-    # @unittest.skip("Not working yet")
     def test_isatab2sra_dump_project_set_xml_biis7(self):
         isatab2sra.convert(self._biis7_dir, self._tmp_dir, validate_first=False)
         with open(os.path.join(self._tmp_dir, "project_set.xml"), "rb") as ps_fp:
diff --git a/tests/convert/test_sampletab2isatab.py b/tests/convert/test_sampletab2isatab.py
index 31fd371f..daf5aeba 100644
--- a/tests/convert/test_sampletab2isatab.py
+++ b/tests/convert/test_sampletab2isatab.py
@@ -6,8 +6,6 @@
 from isatools.convert import sampletab2isatab
 from isatools.tests import utils
 
-SLOW_TESTS = int(os.getenv("SLOW_TESTS", "0"))
-
 
 def setUpModule():
     if not os.path.exists(utils.DATA_DIR):
@@ -35,17 +33,16 @@ def test_sampletab2isatab_test_2(self):
         with open(os.path.join(self._sampletab_dir, "test2.txt")) as sampletab_fp:
             sampletab2isatab.convert(source_sampletab_fp=sampletab_fp, target_dir=self._tmp_dir)
 
-    @unittest.skipIf(not SLOW_TESTS, "slow")
+    @unittest.skip("deprecated method pending deletion")
     def test_sampletab2isatab_GSB_3(self):
         with open(os.path.join(self._sampletab_dir, "GSB-3.txt")) as sampletab_fp:
             sampletab2isatab.convert(source_sampletab_fp=sampletab_fp, target_dir=self._tmp_dir)
 
-    @unittest.skipIf(not SLOW_TESTS, "slow")
+    @unittest.skip("deprecated method pending deletion")
     def test_sampletab2isatab_GSB_537(self):
         with open(os.path.join(self._sampletab_dir, "GSB-537.txt")) as sampletab_fp:
             sampletab2isatab.convert(source_sampletab_fp=sampletab_fp, target_dir=self._tmp_dir)
 
-    @unittest.skip("slow")
     def test_sampletab2isatab_GSB_718(self):
         with open(os.path.join(self._sampletab_dir, "GSB-718.txt")) as sampletab_fp:
             sampletab2isatab.convert(source_sampletab_fp=sampletab_fp, target_dir=self._tmp_dir)
diff --git a/uv.lock b/uv.lock
index 20397fbd..e51493ac 100644
--- a/uv.lock
+++ b/uv.lock
@@ -2675,11 +2675,11 @@ wheels = [
 
 [[package]]
 name = "setuptools"
-version = "80.9.0"
+version = "80.4.0"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/18/5d/3bf57dcd21979b887f014ea83c24ae194cfcd12b9e0fda66b957c69d1fca/setuptools-80.9.0.tar.gz", hash = "sha256:f36b47402ecde768dbfafc46e8e4207b4360c654f1f3bb84475f0a28628fb19c", size = 1319958, upload-time = "2025-05-27T00:56:51.443Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/95/32/0cc40fe41fd2adb80a2f388987f4f8db3c866c69e33e0b4c8b093fdf700e/setuptools-80.4.0.tar.gz", hash = "sha256:5a78f61820bc088c8e4add52932ae6b8cf423da2aff268c23f813cfbb13b4006", size = 1315008, upload-time = "2025-05-09T20:42:27.972Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/a3/dc/17031897dae0efacfea57dfd3a82fdd2a2aeb58e0ff71b77b87e44edc772/setuptools-80.9.0-py3-none-any.whl", hash = "sha256:062d34222ad13e0cc312a4c02d73f059e86a4acbfbdea8f8f76b28c99f306922", size = 1201486, upload-time = "2025-05-27T00:56:49.664Z" },
+    { url = "https://files.pythonhosted.org/packages/b1/93/dba5ed08c2e31ec7cdc2ce75705a484ef0be1a2fecac8a58272489349de8/setuptools-80.4.0-py3-none-any.whl", hash = "sha256:6cdc8cb9a7d590b237dbe4493614a9b75d0559b888047c1f67d49ba50fc3edb2", size = 1200812, upload-time = "2025-05-09T20:42:25.325Z" },
 ]
 
 [[package]]