diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index b7e0522..a46edbc 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -9,6 +9,7 @@ repos:
       - id: check-added-large-files
       - id: debug-statements
       - id: name-tests-test
+        exclude: ^tests/test_data/
       - id: check-merge-conflict
 
   # Python linting and formatting with Ruff
diff --git a/README.md b/README.md
index 4df5cf1..633ba5f 100644
--- a/README.md
+++ b/README.md
@@ -82,7 +82,7 @@ uv run python-encrypt-code generate-password
 Encrypt a Python module or package directory.
 
 ```bash
-uv run python-encrypt-code encrypt <source_path> -o <output.pec> -p <password> [-aad <json-string>]
+uv run python-encrypt-code encrypt <source> -o <output> -p <password> [-aad <json-string>]
 ```
 
 **Options:**
@@ -97,12 +97,12 @@ uv run python-encrypt-code encrypt <source_path> -o <output.pec> -p <password> [
 Decrypt a file and extract contents to disk.
 
 ```bash
-uv run python-encrypt-code decrypt <encrypted_file> -o <output_dir>
+uv run python-encrypt-code decrypt <source> -o <output>
 ```
 
 **Options:**
 
-- `encrypted.pec`: Path to encrypted file
+- `source`: Path to encrypted file
 - `-o, --output`: Directory to extract decrypted files
 
 ### `run-insecure`
@@ -111,13 +111,13 @@ Decrypt and execute a Python script from an encrypted package.
 **N.B. this writes decrypted files to a temporary folder on the disk before executing!**
 
 ```bash
-uv run python-encrypt-code run-insecure <encrypted_file> --script <script_name>
+uv run python-encrypt-code run-insecure <source> --script <script>
 ```
 
 **Options:**
 
-- `encrypted.pec`: Path to encrypted file
-- `-s, --script`: Python script to execute (default: `main.py`)
+- `source`: Path to encrypted file
+- `-s, --script`: Python script to execute
 
 ## Use Cases
 
@@ -129,8 +129,8 @@ export PASSWORD=$(uv run python-encrypt-code generate-password)
 uv run python-encrypt-code encrypt ./my_app -o my_app.pec -p ${PASSWORD}
 
 # Setup your own authentication source and subclass the PasswordProvider
-# Distribute the .pec file to customers and let
-# them run it without seeing the source code
+# Distribute the .pec file to customers and
+# let them run it without seeing the source code
 uv run python-encrypt-code run-insecure ./my_app.pec -p ${PASSWORD} --script main.py
 ```
 
diff --git a/src/python_encrypt_code/data_zipper/data_zipper.py b/src/python_encrypt_code/data_zipper/data_zipper.py
index 3fe6848..681d7a6 100644
--- a/src/python_encrypt_code/data_zipper/data_zipper.py
+++ b/src/python_encrypt_code/data_zipper/data_zipper.py
@@ -4,7 +4,6 @@ from io import BytesIO
 import os
 import zipfile
 from pathlib import Path
-from typing import Dict
 
 from .data_zipper_interface import DataZipperInterface
 
@@ -44,7 +43,7 @@ class DataZipper(DataZipperInterface):
     @staticmethod
     def unzip_data(
         input_data: BytesIO,
-    ) -> Dict[str, BytesIO]:
+    ) -> dict[str, BytesIO]:
         """Unzips the data of a zip file into memory.
 
         Args:
diff --git a/src/python_encrypt_code/data_zipper/data_zipper_interface.py b/src/python_encrypt_code/data_zipper/data_zipper_interface.py
index 662f11d..d391138 100644
--- a/src/python_encrypt_code/data_zipper/data_zipper_interface.py
+++ b/src/python_encrypt_code/data_zipper/data_zipper_interface.py
@@ -1,7 +1,6 @@
 """Definition of DataZipperInterface."""
 
 from io import BytesIO
-from typing import Dict
 from abc import ABC, abstractmethod
 from pathlib import Path
 
@@ -26,7 +25,7 @@ class DataZipperInterface(ABC):
     @abstractmethod
     def unzip_data(
         input_data: BytesIO,
-    ) -> Dict[str, BytesIO]:
+    ) -> dict[str, BytesIO]:
         """Unzips data from the input path and saves it in memory.
 
         Args:
diff --git a/src/python_encrypt_code/password_provider/password_provider.py b/src/python_encrypt_code/password_provider/password_provider.py
index e73ed91..affb225 100644
--- a/src/python_encrypt_code/password_provider/password_provider.py
+++ b/src/python_encrypt_code/password_provider/password_provider.py
@@ -4,7 +4,6 @@ import os
 import json
 import base64
 import secrets
-from typing import Tuple
 
 from .password_provider_interface import PasswordProviderInterface
 
@@ -30,7 +29,7 @@ class PasswordProviderExample(PasswordProviderInterface):
         return url_safe_string
 
     @classmethod
-    def get_decryption_keys(cls) -> Tuple[str, dict[str, str] | None]:
+    def get_decryption_keys(cls) -> tuple[str, dict[str, str] | None]:
         """Placeholder function to get decryption keys. Implement your own logic here.
 
         Returns:
diff --git a/src/python_encrypt_code/password_provider/password_provider_interface.py b/src/python_encrypt_code/password_provider/password_provider_interface.py
index 134b8d8..2767db8 100644
--- a/src/python_encrypt_code/password_provider/password_provider_interface.py
+++ b/src/python_encrypt_code/password_provider/password_provider_interface.py
@@ -1,6 +1,5 @@
 """Definition of PasswordProviderInterface."""
 
-from typing import Tuple
 from abc import ABC, abstractmethod
 
 
@@ -18,7 +17,7 @@ class PasswordProviderInterface(ABC):
 
     @classmethod
     @abstractmethod
-    def get_decryption_keys(cls) -> Tuple[str, dict[str, str] | None]:
+    def get_decryption_keys(cls) -> tuple[str, dict[str, str] | None]:
         """Get decryption keys for decryption.
 
         Returns: