diff --git a/pyproject.toml b/pyproject.toml
index f178c63f..57d4368a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "c2pa-python"
-version = "0.15.0"
+version = "0.16.0"
 requires-python = ">=3.10"
 description = "Python bindings for the C2PA Content Authenticity Initiative (CAI) library"
 readme = { file = "README.md", content-type = "text/markdown" }
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 148567ba..6533001f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -16,4 +16,4 @@ autopep8==2.0.4  # For automatic code formatting
 flake8==7.3.0
 
 # Test dependencies (for callback signers)
-cryptography==45.0.4
\ No newline at end of file
+cryptography==45.0.6
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 4334b02c..5d47321e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 # only used in the training example
-cryptography>=45.0.3
+cryptography>=45.0.6
diff --git a/scripts/download_artifacts.py b/scripts/download_artifacts.py
index 3da65246..44188a07 100644
--- a/scripts/download_artifacts.py
+++ b/scripts/download_artifacts.py
@@ -1,4 +1,18 @@
 #!/usr/bin/env python3
+
+# Copyright 2025 Adobe. All rights reserved.
+# This file is licensed to you under the Apache License,
+# Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
+# or the MIT license (http://opensource.org/licenses/MIT),
+# at your option.
+
+# Unless required by applicable law or agreed to in writing,
+# this software is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR REPRESENTATIONS OF ANY KIND, either express or
+# implied. See the LICENSE-MIT and LICENSE-APACHE files for the
+# specific language governing permissions and limitations under
+# each license.
+
 import os
 import sys
 import requests
diff --git a/setup.py b/setup.py
index 03fccaa2..7a3b3339 100644
--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,16 @@
+# Copyright 2025 Adobe. All rights reserved.
+# This file is licensed to you under the Apache License,
+# Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
+# or the MIT license (http://opensource.org/licenses/MIT),
+# at your option.
+
+# Unless required by applicable law or agreed to in writing,
+# this software is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR REPRESENTATIONS OF ANY KIND, either express or
+# implied. See the LICENSE-MIT and LICENSE-APACHE files for the
+# specific language governing permissions and limitations under
+# each license.
+
 from setuptools import setup, find_namespace_packages
 import sys
 import platform
diff --git a/src/c2pa/__init__.py b/src/c2pa/__init__.py
index 3fa137f5..c2a89d73 100644
--- a/src/c2pa/__init__.py
+++ b/src/c2pa/__init__.py
@@ -1,3 +1,16 @@
+# Copyright 2025 Adobe. All rights reserved.
+# This file is licensed to you under the Apache License,
+# Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
+# or the MIT license (http://opensource.org/licenses/MIT),
+# at your option.
+
+# Unless required by applicable law or agreed to in writing,
+# this software is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR REPRESENTATIONS OF ANY KIND, either express or
+# implied. See the LICENSE-MIT and LICENSE-APACHE files for the
+# specific language governing permissions and limitations under
+# each license.
+
 try:
     from importlib.metadata import version
     __version__ = version("c2pa-python")
diff --git a/src/c2pa/build.py b/src/c2pa/build.py
index 3ee6107b..96c4c245 100644
--- a/src/c2pa/build.py
+++ b/src/c2pa/build.py
@@ -1,3 +1,16 @@
+# Copyright 2025 Adobe. All rights reserved.
+# This file is licensed to you under the Apache License,
+# Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
+# or the MIT license (http://opensource.org/licenses/MIT),
+# at your option.
+
+# Unless required by applicable law or agreed to in writing,
+# this software is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR REPRESENTATIONS OF ANY KIND, either express or
+# implied. See the LICENSE-MIT and LICENSE-APACHE files for the
+# specific language governing permissions and limitations under
+# each license.
+
 import os
 import sys
 import requests
diff --git a/src/c2pa/c2pa.py b/src/c2pa/c2pa.py
index 0edc61bb..aeb1427c 100644
--- a/src/c2pa/c2pa.py
+++ b/src/c2pa/c2pa.py
@@ -1,3 +1,16 @@
+# Copyright 2025 Adobe. All rights reserved.
+# This file is licensed to you under the Apache License,
+# Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
+# or the MIT license (http://opensource.org/licenses/MIT),
+# at your option.
+
+# Unless required by applicable law or agreed to in writing,
+# this software is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR REPRESENTATIONS OF ANY KIND, either express or
+# implied. See the LICENSE-MIT and LICENSE-APACHE files for the
+# specific language governing permissions and limitations under
+# each license.
+
 import ctypes
 import enum
 import json
diff --git a/tests/benchmark.py b/tests/benchmark.py
index afb9a191..c576c272 100644
--- a/tests/benchmark.py
+++ b/tests/benchmark.py
@@ -9,7 +9,7 @@
 # WARRANTIES OR REPRESENTATIONS OF ANY KIND, either express or
 # implied. See the LICENSE-MIT and LICENSE-APACHE files for the
 # specific language governing permissions and limitations under
-# each license.import unittest
+# each license.
 
 import os
 import io
@@ -110,7 +110,7 @@ def test_files_build():
     if os.path.exists(output_path):
         os.remove(output_path)
     with open(test_path, "rb") as source_file:
-        with open(output_path, "wb") as dest_file:
+        with open(output_path, "w+b") as dest_file:
             builder.sign(signer, "image/jpeg", source_file, dest_file)
 
 
diff --git a/tests/conftest.py b/tests/conftest.py
deleted file mode 100644
index bd97d623..00000000
--- a/tests/conftest.py
+++ /dev/null
@@ -1,28 +0,0 @@
-# Copyright 2025 Adobe. All rights reserved.
-# This file is licensed to you under the Apache License,
-# Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
-# or the MIT license (http://opensource.org/licenses/MIT),
-# at your option.
-
-# Unless required by applicable law or agreed to in writing,
-# this software is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR REPRESENTATIONS OF ANY KIND, either express or
-# implied. See the LICENSE-MIT and LICENSE-APACHE files for the
-# specific language governing permissions and limitations under
-# each license.import unittest
-
-import os
-import sys
-import pytest
-
-@pytest.fixture
-def fixtures_dir():
-    """Provide the path to the fixtures directory."""
-    return os.path.join(os.path.dirname(__file__), "fixtures")
-
-pytest.fixture(scope="session", autouse=True)
-def setup_c2pa_library():
-    """Ensure the src/c2pa library path is added to sys.path."""
-    c2pa_path = os.path.abspath(os.path.join(os.path.dirname(__file__), "../src/c2pa"))
-    if c2pa_path not in sys.path:
-        sys.path.insert(0, c2pa_path)
\ No newline at end of file
diff --git a/tests/test_unit_tests.py b/tests/test_unit_tests.py
index 3bf4b6c0..7540d35f 100644
--- a/tests/test_unit_tests.py
+++ b/tests/test_unit_tests.py
@@ -9,7 +9,7 @@
 # WARRANTIES OR REPRESENTATIONS OF ANY KIND, either express or
 # implied. See the LICENSE-MIT and LICENSE-APACHE files for the
 # specific language governing permissions and limitations under
-# each license.import unittest
+# each license.
 
 import os
 import io
diff --git a/tests/test_unit_tests_threaded.py b/tests/test_unit_tests_threaded.py
index c5127404..3d3b6f1e 100644
--- a/tests/test_unit_tests_threaded.py
+++ b/tests/test_unit_tests_threaded.py
@@ -9,7 +9,7 @@
 # WARRANTIES OR REPRESENTATIONS OF ANY KIND, either express or
 # implied. See the LICENSE-MIT and LICENSE-APACHE files for the
 # specific language governing permissions and limitations under
-# each license.import unittest
+# each license.
 
 import os
 import io