diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1638328..7ab11ea 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
       - id: check-yaml
       - id: check-toml
@@ -11,13 +11,13 @@ repos:
       - id: detect-private-key
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.12.2
+    rev: v0.16.4
     hooks:
       - id: ruff
         args: ["--fix"]
       - id: ruff-format
 
   - repo: https://github.com/commitizen-tools/commitizen
-    rev: v4.8.3
+    rev: v4.18.0
     hooks:
       - id: commitizen
diff --git a/cmdc/cli.py b/cmdc/cli.py
index 1394709..88c12c4 100644
--- a/cmdc/cli.py
+++ b/cmdc/cli.py
@@ -1,6 +1,5 @@
 import sys
 from pathlib import Path
-from typing import List, Optional
 
 import typer
 from rich.console import Console
@@ -69,12 +68,12 @@ def main(
         "--list-ignore",
         help="Display the full list of ignore patterns in a detailed view.",
     ),
-    add_ignore: Optional[List[str]] = typer.Option(
+    add_ignore: list[str] | None = typer.Option(
         None,
         "--add-ignore",
         help="Add new patterns to the ignore list in the configuration.",
     ),
-    directory: Optional[Path] = typer.Argument(
+    directory: Path | None = typer.Argument(
         None,
         exists=True,
         file_okay=False,
@@ -89,19 +88,19 @@ def main(
         "-o",
         help="Output mode: 'console' or a filename to save the extracted content.",
     ),
-    filters: Optional[List[str]] = typer.Option(
+    filters: list[str] | None = typer.Option(
         None,
         "--filters",
         "-f",
         help="Filter files by extension (e.g., .py .js).",
     ),
-    recursive: Optional[bool] = typer.Option(
+    recursive: bool | None = typer.Option(
         None,
         "--recursive",
         "-r",
         help="Recursively traverse subdirectories.",
     ),
-    ignore: Optional[List[str]] = typer.Option(
+    ignore: list[str] | None = typer.Option(
         None,
         "--ignore",
         "-i",
@@ -112,19 +111,19 @@ def main(
         "--non-interactive",
         help="Select all matching files without prompting.",
     ),
-    use_gitignore: Optional[bool] = typer.Option(
+    use_gitignore: bool | None = typer.Option(
         None,
         "--use-gitignore/--no-gitignore",
         help="Whether to use .gitignore files in scanned directories (overrides config).",
     ),
-    depth: Optional[int] = typer.Option(
+    depth: int | None = typer.Option(
         None,
         "--depth",
         "-d",
         help="Maximum depth for subdirectory exploration. "
         "Overrides config setting if provided and recursive mode is not used.",
     ),
-    encoding_model: Optional[str] = typer.Option(
+    encoding_model: str | None = typer.Option(
         "o200k_base",
         "--encoding-model",
         help="Token encoding model to use for token counting (overrides config).",
diff --git a/cmdc/config_manager.py b/cmdc/config_manager.py
index c25833a..00391a9 100644
--- a/cmdc/config_manager.py
+++ b/cmdc/config_manager.py
@@ -1,6 +1,5 @@
 import os
 from pathlib import Path
-from typing import List, Optional
 
 import toml
 import typer
@@ -45,7 +44,7 @@ def ensure_config_dir(self) -> None:
         self.config_dir.mkdir(parents=True, exist_ok=True)
 
     @staticmethod
-    def get_default_ignore_patterns() -> List[str]:
+    def get_default_ignore_patterns() -> list[str]:
         """Return the default list of ignore patterns."""
         return [
             ".git",
@@ -119,8 +118,7 @@ def interactive_config(self) -> dict:
         ).execute()
         try:
             default_depth = int(default_depth_str)
-            if default_depth < 1:
-                default_depth = 1
+            default_depth = max(default_depth, 1)
         except ValueError:
             default_depth = 1
 
@@ -261,7 +259,7 @@ def get_env_config() -> dict:
         return env_config
 
     @staticmethod
-    def get_gitignore_patterns(directory: Path) -> List[str]:
+    def get_gitignore_patterns(directory: Path) -> list[str]:
         """
         Parse .gitignore file in the given directory and return valid ignore patterns.
         Skips comments and empty lines.
@@ -296,7 +294,7 @@ def get_gitignore_patterns(directory: Path) -> List[str]:
 
         return patterns
 
-    def load_config(self, directory: Optional[Path] = None) -> dict:
+    def load_config(self, directory: Path | None = None) -> dict:
         """
         Load configuration using a layered approach:
         1. Start with defaults
@@ -357,9 +355,7 @@ def handle_config(self, force: bool) -> None:
             )
         except Exception as e:
             console.print(
-                Panel(
-                    f"[red]Error saving configuration:[/red]\n{str(e)}", title="Error"
-                )
+                Panel(f"[red]Error saving configuration:[/red]\n{e!s}", title="Error")
             )
             raise typer.Exit(1)
 
@@ -447,7 +443,7 @@ def display_ignore_patterns(self) -> None:
         )
         console.print()
 
-    def add_ignore_patterns(self, new_patterns: List[str]) -> None:
+    def add_ignore_patterns(self, new_patterns: list[str]) -> None:
         """Add new patterns to the ignore list in the configuration."""
         self.ensure_config_dir()
 
diff --git a/cmdc/file_browser.py b/cmdc/file_browser.py
index 033e05b..5c42d84 100644
--- a/cmdc/file_browser.py
+++ b/cmdc/file_browser.py
@@ -1,7 +1,7 @@
 import fnmatch
 import os
+from collections.abc import Iterable
 from pathlib import Path
-from typing import Iterable, List, Optional, Tuple
 
 import typer
 from InquirerPy import inquirer
@@ -43,9 +43,9 @@ def __init__(
         self,
         directory: Path,
         recursive: bool,
-        filters: List[str],
-        ignore_patterns: List[str],
-        depth: Optional[int] = None,
+        filters: list[str],
+        ignore_patterns: list[str],
+        depth: int | None = None,
         encoding_model: str = "o200k_base",
     ):
         self.directory = directory
@@ -62,7 +62,7 @@ def _extract_relative(display_str: str) -> str:
         """
         return display_str.split(" [")[0]
 
-    def _transform_selection(self, selected: List[str], token_counts: dict) -> str:
+    def _transform_selection(self, selected: list[str], token_counts: dict) -> str:
         """
         Transform the selection display to show file count and total token count.
         """
@@ -152,7 +152,7 @@ def walk_valid_paths(self) -> Iterable[Path]:
             except PermissionError:
                 pass
 
-    def get_files(self) -> List[Path]:
+    def get_files(self) -> list[Path]:
         """
         Retrieve a list of files from the directory that match the filters
         and do not match the ignore patterns.
@@ -176,7 +176,7 @@ def build_tree(self) -> Tree:
             style_file=lambda x: f"[green]{x}[/green]",
         )
 
-    def scan_and_select_files(self, non_interactive: bool) -> Tuple[List[str], int]:
+    def scan_and_select_files(self, non_interactive: bool) -> tuple[list[str], int]:
         """
         Scan the directory and prompt the user to select files (unless in non-interactive mode).
         Returns:
diff --git a/cmdc/output_handler.py b/cmdc/output_handler.py
index 972885f..4aa1252 100644
--- a/cmdc/output_handler.py
+++ b/cmdc/output_handler.py
@@ -1,13 +1,12 @@
 import fnmatch
+from collections.abc import Iterable
 from pathlib import Path
-from typing import List, Iterable
 
 import pyperclip
 import typer
 from rich.console import Console
 from rich.panel import Panel
 
-
 console = Console()
 
 
@@ -23,7 +22,7 @@ def __init__(
         directory: Path,
         copy_to_clipboard: bool,
         print_to_console: bool = False,
-        ignore_patterns: List[str] = None,
+        ignore_patterns: list[str] = None,
     ):
         self.directory = directory
         self.copy_to_clipboard = copy_to_clipboard
@@ -90,7 +89,7 @@ def build_xml_tree(directory, indent="    "):
 
         return xml_output
 
-    def create_summary_section(self, selected_files: List[str]) -> str:
+    def create_summary_section(self, selected_files: list[str]) -> str:
         """Create a summary section with the list of files and directory tree."""
         summary = "<summary>\n"
 
@@ -109,7 +108,7 @@ def create_summary_section(self, selected_files: List[str]) -> str:
         summary += "</summary>\n"
         return summary
 
-    def process_output(self, selected_files: List[str], output_mode: str) -> tuple:
+    def process_output(self, selected_files: list[str], output_mode: str) -> tuple:
         """
         Process and output the selected files' contents.
         """
diff --git a/cmdc/utils.py b/cmdc/utils.py
index a35d255..de658bc 100644
--- a/cmdc/utils.py
+++ b/cmdc/utils.py
@@ -1,6 +1,6 @@
 import os
+from collections.abc import Callable, Iterable
 from pathlib import Path
-from typing import Callable, Dict, Iterable, List
 
 import tiktoken
 from rich.tree import Tree
@@ -17,8 +17,8 @@ def clear_console() -> None:
 def _add_paths_to_tree(
     current_dir: Path,
     current_tree: Tree,
-    paths_by_parent: Dict[Path, List[Path]],
-    valid_paths: List[Path],
+    paths_by_parent: dict[Path, list[Path]],
+    valid_paths: list[Path],
     file_filter: Callable[[Path], bool],
     style_directory: Callable[[str], str],
     style_file: Callable[[str], str],
@@ -77,7 +77,7 @@ def build_directory_tree(
     valid_paths = list(walk_function())
 
     # Create a mapping of parent directories to their children
-    paths_by_parent: Dict[Path, List[Path]] = {}
+    paths_by_parent: dict[Path, list[Path]] = {}
     for path in valid_paths:
         if path == directory:
             continue