diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index c8115d0..48e6e1e 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -27,10 +27,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Setup python3.12
+      - name: Setup python3.8
         uses: actions/setup-python@v4
         with:
-          python-version: '3.11'
+          python-version: '3.8'
       - run: python -m pip install poetry==1.6
       - run: poetry install
       - run: poetry run tox -m mypy
diff --git a/tox.ini b/tox.ini
index fb355d2..ed8108d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,7 +11,7 @@ labels =
     py39 = py39-pydantic{1,2}-pysimdjson{3,4,5,6}
     py310 = py310-pydantic{1,2}-pysimdjson{3,4,5,6}
     py311 = py311-pydantic{1,2}-pysimdjson{3,5,6}
-    py312 = py312-pydantic{1,2}-pysimdjson{3,6}
+    py312 = py312-pydantic{1,2}-pysimdjson{6}
 
 [testenv]
 passenv=
@@ -34,7 +34,7 @@ commands = pytest tests
 
 [testenv:mypy-pydantic{1,2}]
 labels = mypy
-basepython = python3.12
+basepython = python3.8
 deps =
     mypy
     pydantic1: pydantic~=1.0