v3.16.0

Summary

We are thrilled to announce that Powertools for AWS Lambda (Python) now offers AWS Lambda layers in the AWS China region cn-north-1.

New AWS China Lambda Layer ARNs

You can now use Powertools for AWS Lambda (Python) Lambda layers in the AWS China regions, enhancing customer experience by making our pre-packaged Lambda layers available in this AWS partition.

To take advantage of the new layers, you need to update your functions or deployment setup to include one of the new Lambda layer ARN from the table below:

AWS China (cn-north-1)

Architecture	Layer ARN
x86_64	arn:aws-cn:lambda:cn-north-1:498634801083:layer:AWSLambdaPowertoolsPythonV3-{python_version}-x86_64:{version}
ARM	arn:aws-cn:lambda:cn-north-1:498634801083:layer:AWSLambdaPowertoolsPythonV3-{python_version}-arm64:{version}

Changes

🌟New features and non-breaking changes

• feat(ci): Partition workflow scripts updated to work (#6900) by @sthulb
• feat(ci): Deploy to AWS China partitions (#6867) by @sthulb

📜 Documentation updates

• docs(event-handler): remove Amplify transformers section (#6937) by @dreamorosi
• docs(kafka): refactor kafka documentation (#6854) by @leandrodamascena

🐛 Bug and hot fixes

• fix(logger): caplog working with parent Logger (#6847) by @amin-farjadi
• fix(event_source): fix decode headers with signed bytes (#6878) by @leandrodamascena
• fix(logger): fix exception on flush without buffer (#6794) by @tonnico

🔧 Maintenance

• chore(deps-dev): bump boto3-stubs from 1.39.2 to 1.39.3 (#6940) by @dependabot[bot]
• chore(deps-dev): bump coverage from 7.9.1 to 7.9.2 (#6941) by @dependabot[bot]
• chore(deps-dev): bump aws-cdk from 2.1020.1 to 2.1020.2 (#6942) by @dependabot[bot]
• chore(deps-dev): bump ruff from 0.12.1 to 0.12.2 (#6938) by @dependabot[bot]
• chore(deps-dev): bump types-protobuf from 6.30.2.20250516 to 6.30.2.20250703 (#6939) by @dependabot[bot]
• chore(deps): bump aws-encryption-sdk from 4.0.1 to 4.0.2 (#6932) by @dependabot[bot]
• chore(deps): bump mkdocs-material from 9.6.14 to 9.6.15 (#6931) by @dependabot[bot]
• chore(deps-dev): bump aws-cdk-aws-lambda-python-alpha from 2.203.0a0 to 2.203.1a0 (#6929) by @dependabot[bot]
• chore(deps-dev): bump aws-cdk-lib from 2.203.0 to 2.203.1 (#6928) by @dependabot[bot]
• chore(deps-dev): bump boto3-stubs from 1.39.1 to 1.39.2 (#6930) by @dependabot[bot]
• chore(deps-dev): bump aws-cdk from 2.1020.0 to 2.1020.1 (#6927) by @dependabot[bot]
• chore(ci): incorporate SSM update workflow into release pipeline (#6914) by @leandrodamascena
• chore(deps-dev): bump cfn-lint from 1.36.1 to 1.37.0 (#6918) by @dependabot[bot]
• chore(deps-dev): bump aws-cdk from 2.1019.2 to 2.1020.0 (#6917) by @dependabot[bot]
• chore(deps-dev): bump boto3-stubs from 1.39.0 to 1.39.1 (#6916) by @dependabot[bot]
• chore(deps-dev): bump aws-cdk-aws-lambda-python-alpha from 2.202.0a0 to 2.203.0a0 (#6919) by @dependabot[bot]
• chore(deps-dev): bump pytest-xdist from 3.7.0 to 3.8.0 (#6921) by @dependabot[bot]
• chore(deps): bump mkdocs-material from 9.6.14 to 9.6.15 in /docs (#6920) by @dependabot[bot]
• chore(deps): bump squidfunk/mkdocs-material from eb04b60 to 0bfdba4 in /docs (#6915) by @dependabot[bot]
• chore(deps-dev): bump mypy-boto3-appconfigdata from 1.38.0 to 1.39.0 in the boto-typing group (#6905) by @dependabot[bot]
• chore(deps): bump mkdocs-material from 9.5.50 to 9.6.14 in /docs (#6908) by @dependabot[bot]
• chore(ci): pinning versions in actions + refactor tests (#6904) by @leandrodamascena
• chore(ci): stop publishing to gh-pages branch (#6903) by @leandrodamascena
• chore(ci): stop publishing to gh-pages branch (#6902) by @leandrodamascena
• chore(ci): stop publishing to gh-pages branch (#6901) by @leandrodamascena
• chore(ci): stop publishing to gh-pages branch (#6899) by @leandrodamascena
• chore(ci): remove v2 deployment files (#6895) by @leandrodamascena
• chore(ci): bump urllib3 version (#6893) by @leandrodamascena
• chore(deps-dev): bump ruff from 0.11.8 to 0.12.1 (#6879) by @dependabot[bot]
• chore(deps-dev): bump sentry-sdk from 2.31.0 to 2.32.0 (#6885) by @dependabot[bot]
• chore(ci): refactor thread safe tests (#6889) by @leandrodamascena
• chore(deps-dev): bump boto3-stubs from 1.38.45 to 1.38.46 (#6884) by @dependabot[bot]
• fix(logger): caplog working with parent Logger (#6847) by @amin-farjadi
• chore(deps-dev): bump boto3-stubs from 1.38.44 to 1.38.45 (#6880) by @dependabot[bot]
• chore(deps): bump pydantic-settings from 2.9.1 to 2.10.1 (#6872) by @dependabot[bot]
• chore(deps-dev): bump boto3-stubs from 1.38.43 to 1.38.44 (#6873) by @dependabot[bot]
• chore(deps): bump valkey-glide from 1.3.5 to 2.0.1 (#6871) by @dependabot[bot]
• chore(deps-dev): bump pytest from 8.4.0 to 8.4.1 (#6874) by @dependabot[bot]
• chore(deps-dev): bump aws-cdk from 2.1019.1 to 2.1019.2 (#6875) by @dependabot[bot]
• chore(deps-dev): bump sentry-sdk from 2.29.1 to 2.31.0 (#6870) by @dependabot[bot]
• chore(ci): fix command to replace layer number (#6868) by @leandrodamascena
• chore(deps-dev): bump cfn-lint from 1.35.4 to 1.36.1 (#6855) by @dependabot[bot]
• chore(deps-dev): bump boto3-stubs from 1.38.42 to 1.38.43 (#6864) by @dependabot[bot]
• chore(deps-dev): bump bandit from 1.8.3 to 1.8.5 (#6856) by @dependabot[bot]
• chore(deps): bump datadog-lambda from 6.110.0 to 6.111.0 (#6857) by @dependabot[bot]
• chore(deps-dev): bump boto3-stubs from 1.38.41 to 1.38.42 (#6858) by @dependabot[bot]
• chore(deps): bump docker/setup-buildx-action from 3.10.0 to 3.11.1 (#6823) by @dependabot[bot]
• chore(deps): bump pydantic from 2.11.5 to 2.11.7 (#6844) by @dependabot[bot]
• chore(deps-dev): bump aws-cdk from 2.1018.1 to 2.1019.1 (#6837) by @dependabot[bot]
• chore(deps-dev): bump mypy from 1.16.0 to 1.16.1 (#6828) by @dependabot[bot]
• chore(deps-dev): bump boto3-stubs from 1.38.34 to 1.38.41 (#6845) by @dependabot[bot]
• chore(deps-dev): bump aws-cdk-aws-lambda-python-alpha from 2.200.1a0 to 2.202.0a0 (#6846) by @dependabot[bot]
• chore(deps): bump redis from 5.3.0 to 6.2.0 (#6827) by @dependabot[bot]

This release was made possible by the following contributors:

@amin-farjadi, @dependabot[bot], @dreamorosi, @github-actions[bot], @kimsappi, @leandrodamascena, @sthulb, @tonnico, dependabot[bot] and github-actions[bot]