@@ -92,7 +92,6 @@ jobs:
           - "3.11"
           - "3.12"
           - "3.13"
-          - "3.13t"
           - "3.14"
           - "3.14t"
           - "3.15"
@@ -110,9 +109,6 @@ jobs:
           # skip them for now.
           - os: windows
             python-version: "pypy-3.10"
-          # Windows 3.13t often fails during installation.
-          - os: windows
-            python-version: "3.13t"
         # If we need to tweak the os version we can do it with an include like
         # this:
         #  include:
 
@@ -49,7 +49,6 @@ jobs:
           # When changing this list, be sure to check the [gh] list in
           # tox.ini so that tox will run properly. PYVERSIONS
           - "3.13"
-          - "3.13t"
           - "3.14"
           - "3.14t"
           - "3.15"
 
@@ -91,17 +91,12 @@ jobs:
           - "3.11"
           - "3.12"
           - "3.13"
-          - "3.13t"
           - "3.14"
           - "3.14t"
           - "3.15"
           - "3.15t"
           - "pypy-3.10"
           - "pypy-3.11"
-        exclude:
-          # Windows 3.13t often fails during installation.
-          - os: windows
-            python-version: "3.13t"
 
         #
         # If we need to exclude any combinations, do it like this:
 
@@ -229,10 +229,6 @@ def once(x):                                        # line 301
         # In fact, sysmon explicitly holds onto all code objects,
         # so this will definitely fail with sysmon.
     )
-    @pytest.mark.skipif(
-        env.PYVERSION[:2] == (3, 13) and not env.GIL,
-        reason="3.13t never frees code objects: https://github.com/python/cpython/pull/131989",
-    )
     @pytest.mark.parametrize("branch", [False, True])
     def test_eval_codeobject_leak(self, branch: bool) -> None:
         # https://github.com/coveragepy/coveragepy/issues/1924
 
@@ -4,9 +4,9 @@
 [tox]
 # When changing this list, be sure to check the [gh] list below.
 # PYVERSIONS
-envlist = py3{10-15}, py3{13-15}t, pypy3, doc, lint, mypy
+envlist = py3{10-15}, py3{14-15}t, pypy3, doc, lint, mypy
 labels =
-    py = py3{10-15}, py3{13-15}t, pypy3
+    py = py3{10-15}, py3{14-15}t, pypy3
     qual = lint, mypy
 skip_missing_interpreters = {env:COVERAGE_SKIP_MISSING_INTERPRETERS:True}
 toxworkdir = {env:TOXWORKDIR:.tox}
@@ -137,7 +137,6 @@ python =
     3.11 = py311
     3.12 = py312
     3.13 = py313
-    3.13t = py313t
     3.14 = py314
     3.14t = py314t
     3.15 = py315