diff --git a/make.ps1 b/make.ps1
index 2cbed8e..cde9f53 100644
--- a/make.ps1
+++ b/make.ps1
@@ -46,9 +46,9 @@ function Invoke-Upgrade-Deps
 function Invoke-Lint
 {
     pre-commit run --all-files
-    python -m ruff --fix .
+    python -m ruff check --fix .
     python -m ruff format .
-    python -m mypy src/
+    python -m mypy --strict src/
 }
 
 function Invoke-Test
diff --git a/pyproject.toml b/pyproject.toml
index 704b23f..6f7ae91 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ license = { text = "MIT" }
 readme = "README.md"
 requires-python = ">=3.12,<3.13"
 dependencies = [
-    "typer==0.9.0"
+    "typer==0.12.3"
 ]
 
 [project.urls]
@@ -21,18 +21,18 @@ bpp = "bpp.cli:app"
 
 [project.optional-dependencies]
 dev = [
-    "pre-commit==3.6.1",
-    "ruff==0.2.1",
-    "mypy==1.8.0",
+    "pre-commit==3.7.1",
+    "ruff==0.4.10",
+    "mypy==1.10.0",
 ]
 tests = [
-    "pytest==8.0.0",
+    "pytest==8.2.1",
     "pytest-randomly==3.15.0",
 ]
 docs = [
-    "sphinx==7.2.6",
-    "furo==2024.1.29",
-    "sphinx-autoapi==3.0.0",
+    "sphinx==7.3.7",
+    "furo==2024.5.6",
+    "sphinx-autoapi==3.1.1",
     "releases==2.1.1",
 ]
 
@@ -47,7 +47,9 @@ target-version = "py312"
 line-length = 120
 
 [tool.ruff.lint]
-select = ["ALL"]
+select = [
+    "ALL",
+]
 ignore = [
     "CPY001", # (Missing copyright notice at top of file) - No license
 ]
diff --git a/src/bpp/interpreter.py b/src/bpp/interpreter.py
index b69045e..a0299e5 100644
--- a/src/bpp/interpreter.py
+++ b/src/bpp/interpreter.py
@@ -91,7 +91,7 @@ def get_input(self: Self) -> None:
         """Output the ASCII value of the byte at the current position."""
         self.memory[self.current_position] = ord(sys.stdin.read(1))
 
-    def handle_token(self: Self, token: Token) -> ResultState:
+    def handle_token(self: Self, token: Token) -> ResultState:  # noqa: C901
         """Handle a single token."""
         match token:
             case Token.INCREMENT_POINTER:
diff --git a/tests/test_example_files.py b/tests/test_example_files.py
index 09a02ef..bee1eb8 100644
--- a/tests/test_example_files.py
+++ b/tests/test_example_files.py
@@ -24,7 +24,7 @@ def test_example_files(example_file: Path, expected_result: str) -> None:
 
 def test_example_files_with_input(monkeypatch) -> None:  # noqa: ANN001 -- pytest builtin fixture
     """Test example files with input."""
-    source = Path("./examples/echo.bf").read_text()
+    source = Path("./examples/echo.bf").read_text(encoding="locale")
     monkeypatch.setattr("sys.stdin", StringIO("a"))
     interpreter = Interpreter()
     assert interpreter.run(source) == "a"