diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a9bf51c1..6cbc291e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,8 +2,7 @@ name: Tests
 
 on: [push, pull_request, workflow_dispatch]
 
-permissions:
-  contents: read
+permissions: {}
 
 env:
   FORCE_COLOR: 1
@@ -15,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
 
     steps:
       - uses: actions/checkout@v6
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 70470385..d1a4a0dd 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -22,3 +22,8 @@ repos:
       - id: end-of-file-fixer
       - id: forbid-new-submodules
       - id: trailing-whitespace
+
+  - repo: https://github.com/tox-dev/tox-ini-fmt
+    rev: 1.7.1
+    hooks:
+      - id: tox-ini-fmt
diff --git a/tox.ini b/tox.ini
index a266c2eb..a0890702 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,12 +1,14 @@
 [tox]
-envlist = py{314, 313, 312, 311, 310}
-toxworkdir={env:TOX_WORK_DIR:.tox}
+requires =
+    tox>=4.2
+env_list =
+    py{315, 314, 313, 312, 311, 310}
 
 [testenv]
-passenv =
-    FORCE_COLOR
-skip_install = True
+skip_install = true
 deps =
-	-r dev-requirements.txt
+    -r dev-requirements.txt
+pass_env =
+    FORCE_COLOR
 commands =
-	pytest {posargs}
+    pytest {posargs}