diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index f60c4ca..290dccf 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -9,11 +9,15 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
     steps:
       - uses: actions/checkout@v5
       - uses: astral-sh/setup-uv@v5
         with:
           enable-cache: true
+          python-version: ${{ matrix.python-version }}
       - run: uvx hatch test -acp
         if: ${{ always() }}
   lint:
diff --git a/ollama/_utils.py b/ollama/_utils.py
index 15f1cc0..b32525b 100644
--- a/ollama/_utils.py
+++ b/ollama/_utils.py
@@ -3,14 +3,14 @@
 import inspect
 import re
 from collections import defaultdict
-from typing import Callable, Union
+from typing import Callable, Dict, Union
 
 import pydantic
 
 from ollama._types import Tool
 
 
-def _parse_docstring(doc_string: Union[str, None]) -> dict[str, str]:
+def _parse_docstring(doc_string: Union[str, None]) -> Dict[str, str]:
   parsed_docstring = defaultdict(str)
   if not doc_string:
     return parsed_docstring
diff --git a/pyproject.toml b/pyproject.toml
index 05eafdc..dfd6904 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,6 +30,7 @@ default-args = ['ollama', 'tests']
 extra-dependencies = [
     'pytest-anyio',
     'pytest-httpserver',
+    'tox',
 ]
 
 [tool.hatch.envs.hatch-static-analysis]
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..bda8f8b
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,16 @@
+# Tox configuration for local multi-version testing
+# Run `tox` to test the package on all supported Python versions
+# Requires Python interpreters to be installed (e.g., via pyenv)
+
+[tox]
+envlist = py38, py39, py310, py311, py312, py313
+skip_missing_interpreters = true
+
+[testenv]
+allowlist_externals = uv
+deps =
+    pytest
+    pytest-anyio
+    pytest-httpserver
+install_command = uv pip install {opts} {packages}
+commands = uv run pytest {posargs:tests/}
\ No newline at end of file