diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index d483857..d3455e8 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/pyproject.toml b/pyproject.toml
index 66aac54..ca4debf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,6 +11,11 @@ authors = [
 description = "Simple tool to check if python version is past EOL"
 readme = "README.md"
 requires-python = ">=3.7"
+dependencies = [
+    "appdirs",
+    "requests",
+    "setuptools",
+]
 classifiers = [
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
@@ -23,6 +28,13 @@ classifiers = [
 [project.scripts]
 eol = "python_eol.main:main"
 
+[project.optional-dependencies]
+test = [
+    "pytest",
+    "freezegun",
+    "pytest-cov",
+]
+
 [tool.setuptools]
 packages = ["python_eol"]
 
diff --git a/python_eol/cache.py b/python_eol/cache.py
new file mode 100644
index 0000000..24a907c
--- /dev/null
+++ b/python_eol/cache.py
@@ -0,0 +1,82 @@
+"""Cache management for python-eol."""
+from __future__ import annotations
+
+import json
+import logging
+from datetime import datetime, timedelta
+from pathlib import Path
+from typing import Any
+
+import appdirs
+import requests
+
+logger = logging.getLogger(__name__)
+
+CACHE_DIR = Path(appdirs.user_cache_dir("python-eol"))
+CACHE_FILE = CACHE_DIR / "eol_data.json"
+CACHE_EXPIRY = timedelta(days=1)
+
+
+def _fetch_eol_data() -> list[dict[str, Any]] | None:
+    """Fetch EOL data from the API."""
+    api_url = "https://endoflife.date/api/python.json"
+    try:
+        response = requests.get(api_url, timeout=10)
+        response.raise_for_status()
+        data = response.json()
+    except requests.RequestException as e:
+        logger.warning(f"Failed to fetch EOL data: {e}")
+        return None
+
+    processed_data = []
+    for entry in data:
+        raw_version = entry["latest"]
+        major_minor_parts = raw_version.split(".")[:2]
+        parsed_version = ".".join(major_minor_parts)
+        end_of_life_date = datetime.strptime(entry["eol"], "%Y-%m-%d").date()
+        entry_data = {"Version": parsed_version, "End of Life": str(end_of_life_date)}
+        processed_data.append(entry_data)
+    return processed_data
+
+
+def _read_cache() -> list[dict[str, Any]] | None:
+    """Read EOL data from cache."""
+    if not CACHE_FILE.exists():
+        return None
+
+    if datetime.fromtimestamp(CACHE_FILE.stat().st_mtime) < datetime.now() - CACHE_EXPIRY:
+        logger.debug("Cache is expired.")
+        return None
+
+    try:
+        with CACHE_FILE.open() as f:
+            return json.load(f)
+    except (IOError, json.JSONDecodeError) as e:
+        logger.warning(f"Failed to read cache: {e}")
+        return None
+
+
+def _write_cache(data: list[dict[str, Any]]) -> None:
+    """Write EOL data to cache."""
+    try:
+        CACHE_DIR.mkdir(parents=True, exist_ok=True)
+        with CACHE_FILE.open("w") as f:
+            json.dump(data, f, indent=4)
+    except IOError as e:
+        logger.warning(f"Failed to write cache: {e}")
+
+
+def get_eol_data() -> list[dict[str, Any]] | None:
+    """Get EOL data from cache or fetch if stale."""
+    cached_data = _read_cache()
+    if cached_data:
+        logger.debug("Using cached EOL data.")
+        return cached_data
+
+    logger.debug("Fetching new EOL data.")
+    fetched_data = _fetch_eol_data()
+    if fetched_data:
+        _write_cache(fetched_data)
+        return fetched_data
+
+    return None
diff --git a/python_eol/main.py b/python_eol/main.py
index 2116897..02d825b 100644
--- a/python_eol/main.py
+++ b/python_eol/main.py
@@ -10,6 +10,7 @@
 from typing import Any
 
 from ._docker_utils import _extract_python_version_from_docker_file, _find_docker_files
+from .cache import get_eol_data
 
 EOL_WARN_DAYS = 60
 
@@ -47,7 +48,11 @@ def _check_eol(
     fail_close_to_eol: bool = False,
     prefix: str = "",
 ) -> int:
-    my_version_info = version_info[python_version]
+    my_version_info = version_info.get(python_version)
+    if not my_version_info:
+        logger.warning(f"Could not find EOL information for python {python_version}")
+        return 0
+
     today = date.today()
     eol_date = date.fromisoformat(my_version_info["End of Life"])
     time_to_eol = eol_date - today
@@ -76,9 +81,12 @@ def _check_python_eol(
     check_docker_files: bool = False,
     nep_mode: bool = False,
 ) -> int:
-    db_file = _get_db_file_path(nep_mode=nep_mode)
-    with db_file.open() as f:
-        eol_data = json.load(f)
+    eol_data = get_eol_data()
+    if eol_data is None:
+        logger.debug("Falling back to packaged EOL data.")
+        db_file = _get_db_file_path(nep_mode=nep_mode)
+        with db_file.open() as f:
+            eol_data = json.load(f)
 
     version_info = {entry["Version"]: entry for entry in eol_data}
 
diff --git a/scripts/eol_scraper.py b/scripts/eol_scraper.py
deleted file mode 100644
index ef041f7..0000000
--- a/scripts/eol_scraper.py
+++ /dev/null
@@ -1,38 +0,0 @@
-import json
-from datetime import datetime
-
-import requests
-
-# URL of the API
-api_url = "https://endoflife.date/api/python.json"
-
-# Send a GET request to the API
-response = requests.get(api_url)
-
-# Parse the JSON response
-data = json.loads(response.content)
-
-# Initialize an empty list to store the processed data
-processed_data = []
-
-# Iterate over the entries in the API response
-for entry in data:
-    raw_version = entry["latest"]
-    # Strip out the patch part of the version
-    major_minor_parts = raw_version.split(".")[:2]
-    parsed_version = ".".join(major_minor_parts)
-
-    # Convert end_of_life to datetime object
-    end_of_life_date = datetime.strptime(entry["eol"], "%Y-%m-%d").date()
-
-    # Create a new dictionary for the entry data
-    entry_data = {"Version": parsed_version, "End of Life": end_of_life_date}
-
-    # Append the entry data to the list
-    processed_data.append(entry_data)
-
-# Convert the processed data list to JSON format
-json_data = json.dumps(processed_data, indent=4, default=str)
-
-# Print the JSON data
-print(json_data)
diff --git a/tests/test_cache.py b/tests/test_cache.py
new file mode 100644
index 0000000..61b06b8
--- /dev/null
+++ b/tests/test_cache.py
@@ -0,0 +1,101 @@
+from __future__ import annotations
+
+import json
+from datetime import datetime
+from pathlib import Path
+from unittest import mock
+
+import pytest
+import requests
+from freezegun import freeze_time
+
+from python_eol.cache import (
+    CACHE_EXPIRY,
+    _fetch_eol_data,
+    _read_cache,
+    _write_cache,
+    get_eol_data,
+)
+
+FAKE_EOL_DATA = [{"Version": "3.9", "End of Life": "2025-10-01"}]
+
+
+@pytest.fixture
+def mock_cache_file(tmp_path: Path) -> Path:
+    """Mock the cache file and its directory."""
+    cache_dir = tmp_path / "python-eol"
+    cache_file = cache_dir / "eol_data.json"
+    with mock.patch("python_eol.cache.CACHE_DIR", cache_dir), \
+         mock.patch("python_eol.cache.CACHE_FILE", cache_file):
+        yield cache_file
+
+
+def test_fetch_eol_data_success() -> None:
+    """Test fetching EOL data successfully."""
+    with mock.patch("requests.get") as mock_get:
+        mock_get.return_value.raise_for_status.return_value = None
+        mock_get.return_value.json.return_value = [
+            {"latest": "3.9.0", "eol": "2025-10-01"}
+        ]
+        data = _fetch_eol_data()
+        assert data == FAKE_EOL_DATA
+
+
+def test_fetch_eol_data_failure() -> None:
+    """Test fetching EOL data with a request failure."""
+    with mock.patch("requests.get", side_effect=requests.RequestException("API is down")):
+        data = _fetch_eol_data()
+        assert data is None
+
+
+def test_read_write_cache(mock_cache_file: Path) -> None:
+    """Test writing to and reading from the cache."""
+    _write_cache(FAKE_EOL_DATA)
+    assert mock_cache_file.exists()
+    with mock_cache_file.open() as f:
+        data = json.load(f)
+    assert data == FAKE_EOL_DATA
+
+    read_data = _read_cache()
+    assert read_data == FAKE_EOL_DATA
+
+
+def test_read_cache_expired(mock_cache_file: Path) -> None:
+    """Test that an expired cache returns None."""
+    _write_cache(FAKE_EOL_DATA)
+    with freeze_time(datetime.now() + CACHE_EXPIRY + CACHE_EXPIRY):
+        assert _read_cache() is None
+
+
+def test_read_cache_not_found(mock_cache_file: Path) -> None:
+    """Test that a non-existent cache returns None."""
+    assert _read_cache() is None
+
+
+def test_get_eol_data_from_cache(mock_cache_file: Path) -> None:
+    """Test get_eol_data reads from a valid cache."""
+    _write_cache(FAKE_EOL_DATA)
+    with mock.patch("python_eol.cache._fetch_eol_data") as mock_fetch:
+        data = get_eol_data()
+        mock_fetch.assert_not_called()
+        assert data == FAKE_EOL_DATA
+
+
+def test_get_eol_data_fetches_when_cache_is_stale(mock_cache_file: Path) -> None:
+    """Test get_eol_data fetches new data when cache is stale."""
+    _write_cache(FAKE_EOL_DATA)
+    with freeze_time(datetime.now() + CACHE_EXPIRY + CACHE_EXPIRY):
+        with mock.patch("python_eol.cache._fetch_eol_data") as mock_fetch:
+            mock_fetch.return_value = [{"Version": "3.10", "End of Life": "2026-10-01"}]
+            data = get_eol_data()
+            mock_fetch.assert_called_once()
+            assert data == [{"Version": "3.10", "End of Life": "2026-10-01"}]
+
+
+def test_get_eol_data_fetches_when_no_cache(mock_cache_file: Path) -> None:
+    """Test get_eol_data fetches new data when no cache exists."""
+    with mock.patch("python_eol.cache._fetch_eol_data") as mock_fetch:
+        mock_fetch.return_value = FAKE_EOL_DATA
+        data = get_eol_data()
+        mock_fetch.assert_called_once()
+        assert data == FAKE_EOL_DATA
diff --git a/tests/test_docker_utils.py b/tests/test_docker_utils.py
index 0ddb417..e3c0053 100644
--- a/tests/test_docker_utils.py
+++ b/tests/test_docker_utils.py
@@ -18,28 +18,15 @@ class TestPath(Path):
         """Class to make MyPy happy (hack!)."""
 
 
-@pytest.fixture()
-def test_path_class(tmpdir: Path) -> type[TestPath]:
-    class TestPath(type(Path())):  # type: ignore[misc]
-        def __new__(
-            cls: type[TestPath],
-            *pathsegments: list[Path],
-        ) -> Any:  # noqa: ANN401
-            return super().__new__(cls, *[tmpdir, *pathsegments])
-
-    return TestPath
-
-
-def test_find_docker_files(tmpdir: Path, test_path_class: type[TestPath]) -> None:
-    p = Path(tmpdir / "Dockerfile")
+def test_find_docker_files(tmpdir: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.chdir(tmpdir)
+    p = Path("Dockerfile")
     p.touch()
-    Path(tmpdir)
-    with mock.patch.object(
-        python_eol._docker_utils,  # noqa: SLF001
-        "Path",
-        test_path_class,
-    ):
-        assert _find_docker_files() == [p]
+    d = Path("a/b")
+    d.mkdir(parents=True)
+    p2 = d / "Dockerfile-test"
+    p2.touch()
+    assert sorted(_find_docker_files()) == sorted([p, p2])
 
 
 @pytest.mark.parametrize(
diff --git a/tests/test_main.py b/tests/test_main.py
index 712ed84..5d77a66 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -30,6 +30,14 @@ def _mock_py37() -> Iterable[None]:
 mock_py37 = pytest.mark.usefixtures("_mock_py37")
 
 
+@pytest.fixture(autouse=True)
+def _mock_get_eol_data() -> Iterable[None]:
+    """Mock get_eol_data to avoid network calls."""
+    with mock.patch("python_eol.main.get_eol_data") as mocked_get_eol_data:
+        mocked_get_eol_data.return_value = None  # Fallback to packaged db.json
+        yield
+
+
 @pytest.fixture()
 def _mock_py311() -> Iterable[None]:
     with mock.patch("platform.python_version_tuple") as mocked_python_version_tuple:
diff --git a/tox.ini b/tox.ini
index fe53c52..8646f42 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 skip_missing_interpreters = {env:TOX_SKIP_MISSING_INTERPRETERS:True}
-envlist = py{3.7,3.8,3.9,3.10,3.11},lint
+envlist = py{3.7,3.8,3.9,3.10,3.11,3.12,3.13},lint
 isolated_build = True
 
 [testenv]
@@ -9,10 +9,13 @@ deps =
     pytest
     coverage
     freezegun
+    requests
+    appdirs
+    setuptools
 commands =
     coverage run -m pytest {posargs}
 
-[testenv:py{3.9,3.10,3.11}]
+[testenv:py{3.9,3.10,3.11,3.12,3.13}]
 commands =
     {[testenv]commands}
     coverage xml