diff --git a/tox.ini b/tox.ini
index 5c300fc7..ff31d030 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,7 @@ envlist =
     clean,
     check,
     docs,
-    {py38,py39,py310,py311,py312,pypy38,pypy39,pypy310}-pytest{81}-xdist{350}-coverage{75,76},
+    {py38,py39,py310,py311,py312,pypy38,pypy39,pypy310}-{pytest83}-{xdist36}-coverage{75,76},
     report
 ignore_basepython_conflict = true
 
@@ -35,54 +35,23 @@ setenv =
     PYTHONUNBUFFERED=yes
 
     # Use env vars for (optional) pinning of deps.
-    pytest46:  _DEP_PYTEST=pytest==4.6.10
-    pytest53:  _DEP_PYTEST=pytest==5.3.2
-    pytest54:  _DEP_PYTEST=pytest==5.4.3
-    pytest60:  _DEP_PYTEST=pytest==6.0.2
-    pytest61:  _DEP_PYTEST=pytest==6.1.2
-    pytest62:  _DEP_PYTEST=pytest==6.2.5
-    pytest70:  _DEP_PYTEST=pytest==7.0.1
-    pytest71:  _DEP_PYTEST=pytest==7.1.2
-    pytest72:  _DEP_PYTEST=pytest==7.2.0
-    pytest73:  _DEP_PYTEST=pytest==7.3.3
-    pytest74:  _DEP_PYTEST=pytest==7.4.4
     pytest80:  _DEP_PYTEST=pytest==8.0.2
     pytest81:  _DEP_PYTEST=pytest==8.1.1
+    pytest82:  _DEP_PYTEST=pytest==8.2.2
+    pytest83:  _DEP_PYTEST=pytest==8.3.3
 
-    xdist127: _DEP_PYTESTXDIST=pytest-xdist==1.27.0
-    xdist129: _DEP_PYTESTXDIST=pytest-xdist==1.29.0
-    xdist131: _DEP_PYTESTXDIST=pytest-xdist==1.31.0
-    xdist132: _DEP_PYTESTXDIST=pytest-xdist==1.32.0
-    xdist133: _DEP_PYTESTXDIST=pytest-xdist==1.33.0
-    xdist134: _DEP_PYTESTXDIST=pytest-xdist==1.34.0
-    xdist200: _DEP_PYTESTXDIST=pytest-xdist==2.0.0
-    xdist201: _DEP_PYTESTXDIST=pytest-xdist==2.1.0
-    xdist202: _DEP_PYTESTXDIST=pytest-xdist==2.2.0
-    xdist250: _DEP_PYTESTXDIST=pytest-xdist==2.5.0
-    xdist320: _DEP_PYTESTXDIST=pytest-xdist==3.2.0
-    xdist330: _DEP_PYTESTXDIST=pytest-xdist==3.3.1
-    xdist340: _DEP_PYTESTXDIST=pytest-xdist==3.4.0
-    xdist350: _DEP_PYTESTXDIST=pytest-xdist==3.5.0
+    xdist32: _DEP_PYTESTXDIST=pytest-xdist==3.2.0
+    xdist33: _DEP_PYTESTXDIST=pytest-xdist==3.3.1
+    xdist34: _DEP_PYTESTXDIST=pytest-xdist==3.4.0
+    xdist35: _DEP_PYTESTXDIST=pytest-xdist==3.5.0
+    xdist36: _DEP_PYTESTXDIST=pytest-xdist==3.6.1
     xdistdev: _DEP_PYTESTXDIST=git+https://github.com/pytest-dev/pytest-xdist.git#egg=pytest-xdist
 
-    coverage45: _DEP_COVERAGE=coverage==4.5.4
-    coverage50: _DEP_COVERAGE=coverage==5.0.4
-    coverage51: _DEP_COVERAGE=coverage==5.1
-    coverage52: _DEP_COVERAGE=coverage==5.2.1
-    coverage53: _DEP_COVERAGE=coverage==5.3.1
-    coverage54: _DEP_COVERAGE=coverage==5.4
-    coverage55: _DEP_COVERAGE=coverage==5.5
-    coverage60: _DEP_COVERAGE=coverage==6.0.2
-    coverage61: _DEP_COVERAGE=coverage==6.1.2
-    coverage62: _DEP_COVERAGE=coverage==6.2
-    coverage63: _DEP_COVERAGE=coverage==6.3.3
-    coverage64: _DEP_COVERAGE=coverage==6.4.2
-    coverage65: _DEP_COVERAGE=coverage==6.5.0
     coverage72: _DEP_COVERAGE=coverage==7.2.7
     coverage73: _DEP_COVERAGE=coverage==7.3.4
     coverage74: _DEP_COVERAGE=coverage==7.4.4
     coverage75: _DEP_COVERAGE=coverage==7.5.4
-    coverage76: _DEP_COVERAGE=coverage==7.6.1
+    coverage76: _DEP_COVERAGE=coverage==7.6.4
     # For testing against a coverage.py working tree.
     coveragedev: _DEP_COVERAGE=-e{env:COVERAGE_HOME}
 passenv =