diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index be87421..703337b 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -24,7 +24,7 @@ jobs:
         with:
           python-version: "3.10"
           cache: pip
-          cache-dependency-path: "setup.py"
+          cache-dependency-path: setup.cfg
 
       - name: Install dependencies
         run: |
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f3bc60e..4b33984 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.31.1
+    rev: v2.34.0
     hooks:
       - id: pyupgrade
         args: [--py37-plus]
@@ -28,16 +28,13 @@ repos:
       - id: python-check-blanket-noqa
 
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.1.0
+    rev: v4.3.0
     hooks:
       - id: check-merge-conflict
       - id: check-toml
       - id: check-yaml
-
-  - repo: https://github.com/tox-dev/pyproject-fmt
-    rev: 0.3.3
-    hooks:
-      - id: pyproject-fmt
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
 
   - repo: https://github.com/asottile/setup-cfg-fmt
     rev: v1.20.1
@@ -45,13 +42,18 @@ repos:
       - id: setup-cfg-fmt
         args: [--max-py-version=3.11]
 
+  - repo: https://github.com/tox-dev/pyproject-fmt
+    rev: 0.3.3
+    hooks:
+      - id: pyproject-fmt
+
   - repo: https://github.com/tox-dev/tox-ini-fmt
     rev: 0.5.2
     hooks:
       - id: tox-ini-fmt
 
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v2.6.2
+    rev: v2.7.1
     hooks:
       - id: prettier
         args: [--prose-wrap=always, --print-width=88]
diff --git a/src/pepotron/__init__.py b/src/pepotron/__init__.py
index 431a506..ae64f19 100644
--- a/src/pepotron/__init__.py
+++ b/src/pepotron/__init__.py
@@ -44,6 +44,7 @@
     "3.9": 596,
     "3.10": 619,
     "3.11": 664,
+    "3.12": 693,
 }
 
 
diff --git a/tests/test_cache.py b/tests/test_cache.py
index c4dfacf..b5dbfb0 100644
--- a/tests/test_cache.py
+++ b/tests/test_cache.py
@@ -10,18 +10,18 @@
 
 
 class TestCache:
-    def setup_method(self):
+    def setup_method(self) -> None:
         # Choose a new cache dir that doesn't exist
         self.original_cache_dir = _cache.CACHE_DIR
         self.temp_dir = tempfile.TemporaryDirectory()
         _cache.CACHE_DIR = Path(self.temp_dir.name) / "pepotron"
 
-    def teardown_method(self):
+    def teardown_method(self) -> None:
         # Reset original
         _cache.CACHE_DIR = self.original_cache_dir
 
     @freeze_time("2018-12-26")
-    def test__cache_filename(self):
+    def test__cache_filename(self) -> None:
         # Arrange
         url = "https://peps.python.org/api/peps.json"
 
@@ -31,7 +31,7 @@ def test__cache_filename(self):
         # Assert
         assert str(out).endswith("2018-12-26-https-peps-python-org-api-peps-json.json")
 
-    def test__load_cache_not_exist(self):
+    def test__load_cache_not_exist(self) -> None:
         # Arrange
         filename = Path("file-does-not-exist")
 
@@ -41,7 +41,7 @@ def test__load_cache_not_exist(self):
         # Assert
         assert data == {}
 
-    def test__load_cache_bad_data(self):
+    def test__load_cache_bad_data(self) -> None:
         # Arrange
         with tempfile.NamedTemporaryFile(delete=False) as f:
             f.write(b"Invalid JSON!")
@@ -52,10 +52,10 @@ def test__load_cache_bad_data(self):
         # Assert
         assert data == {}
 
-    def test_cache_round_trip(self):
+    def test_cache_round_trip(self) -> None:
         # Arrange
         filename = _cache.CACHE_DIR / "test_cache_round_trip.json"
-        data = {"1": "test data"}
+        data = {"1": {"authors": "bob"}}
 
         # Act
         _cache.save(filename, data)
@@ -68,7 +68,7 @@ def test_cache_round_trip(self):
         assert new_data == data
 
     @freeze_time("2021-10-25")
-    def test__clear_cache_all(self):
+    def test__clear_cache_all(self) -> None:
         # Arrange
         # Create old cache file
         cache_file_old = _cache.CACHE_DIR / "2021-10-24-old-cache-file.json"
@@ -86,7 +86,7 @@ def test__clear_cache_all(self):
         assert not cache_file_new.exists()
 
     @freeze_time("2021-10-25")
-    def test__clear_cache_old(self):
+    def test__clear_cache_old(self) -> None:
         # Arrange
         # Create old cache file
         cache_file_old = _cache.CACHE_DIR / "2021-10-24-old-cache-file.json"