Dependency Update: Updated to the latest SDK module versions
v1.41.3 (2025-12-02)
Dependency Update: Updated to the latest SDK module versions
Dependency Update: Upgrade to smithy-go v1.24.0. Notably this version of the library reduces the allocation footprint of the middleware system. We observe a ~10% reduction in allocations per SDK call with this change.
v1.41.2 (2025-11-25)
Bug Fix: Add error check for endpoint param binding during auth scheme resolution to fix panic reported in #3234
v1.41.1 (2025-11-19.2)
Dependency Update: Updated to the latest SDK module versions
v1.41.0 (2025-11-19)
Feature: IAM now supports outbound identity federation via the STS GetWebIdentityToken API, enabling AWS workloads to securely authenticate with external services using short-lived JSON Web Tokens.
v1.40.2 (2025-11-12)
Bug Fix: Further reduce allocation overhead when the metrics system isn't in-use.
Bug Fix: Reduce allocation overhead when the client doesn't have any HTTP interceptors configured.
Bug Fix: Remove blank trace spans towards the beginning of the request that added no additional information. This conveys a slight reduction in overall allocations.
v1.40.1 (2025-11-11)
Bug Fix: Return validation error if input region is not a valid host label.
v1.40.0 (2025-11-10)
Feature: Added GetDelegatedAccessToken API, which is not available for general use at this time.
v1.39.1 (2025-11-04)
Dependency Update: Updated to the latest SDK module versions
Dependency Update: Upgrade to smithy-go v1.23.2 which should convey some passive reduction of overall allocations, especially when not using the metrics system.
Dependency Update: Updated to the latest SDK module versions
v1.38.9 (2025-10-23)
Dependency Update: Updated to the latest SDK module versions
v1.38.8 (2025-10-22)
No change notes available for this release.
v1.38.7 (2025-10-16)
Dependency Update: Bump minimum Go version to 1.23.
Dependency Update: Updated to the latest SDK module versions
v1.38.6 (2025-09-26)
Dependency Update: Updated to the latest SDK module versions
v1.38.5 (2025-09-23)
Dependency Update: Updated to the latest SDK module versions
v1.38.4 (2025-09-10)
No change notes available for this release.
v1.38.3 (2025-09-08)
Dependency Update: Updated to the latest SDK module versions
v1.38.2 (2025-08-29)
Dependency Update: Updated to the latest SDK module versions
v1.38.1 (2025-08-27)
Dependency Update: Update to smithy-go v1.23.0.
Dependency Update: Updated to the latest SDK module versions
v1.38.0 (2025-08-21)
Feature: Remove incorrect endpoint tests
Dependency Update: Updated to the latest SDK module versions
v1.37.1 (2025-08-20)
Bug Fix: Remove unused deserialization code.
v1.37.0 (2025-08-11)
Feature: Add support for configuring per-service Options via callback on global config.
Dependency Update: Updated to the latest SDK module versions
v1.36.0 (2025-08-04)
Feature: Support configurable auth scheme preferences in service clients via AWSAUTHSCHEMEPREFERENCE in the environment, authscheme_preference in the config file, and through in-code settings on LoadDefaultConfig and client constructor methods.
Dependency Update: Updated to the latest SDK module versions
v1.35.1 (2025-07-30)
Dependency Update: Updated to the latest SDK module versions
v1.35.0 (2025-07-28)
Feature: Add support for HTTP interceptors.
Dependency Update: Updated to the latest SDK module versions
v1.34.1 (2025-07-19)
Dependency Update: Updated to the latest SDK module versions
v1.34.0 (2025-06-17)
Feature: The AWS Security Token Service APIs AssumeRoleWithSAML and AssumeRoleWithWebIdentity can now be invoked without pre-configured AWS credentials in the SDK configuration.
Dependency Update: Update to smithy-go v1.22.4.
Dependency Update: Updated to the latest SDK module versions
v1.33.21 (2025-06-10)
Dependency Update: Updated to the latest SDK module versions
v1.33.20 (2025-06-06)
No change notes available for this release.
v1.33.19 (2025-04-10)
No change notes available for this release.
v1.33.18 (2025-04-03)
No change notes available for this release.
v1.33.17 (2025-03-04.2)
Bug Fix: Add assurance test for operation order.
v1.33.16 (2025-02-27)
Dependency Update: Updated to the latest SDK module versions
v1.33.15 (2025-02-18)
Bug Fix: Bump go version to 1.22
Dependency Update: Updated to the latest SDK module versions
v1.33.14 (2025-02-05)
Dependency Update: Updated to the latest SDK module versions
v1.33.13 (2025-02-04)
No change notes available for this release.
v1.33.12 (2025-01-31)
Dependency Update: Updated to the latest SDK module versions
v1.33.11 (2025-01-30)
Dependency Update: Updated to the latest SDK module versions
v1.33.10 (2025-01-24)
Dependency Update: Updated to the latest SDK module versions
Dependency Update: Upgrade to smithy-go v1.22.2.
v1.33.9 (2025-01-17)
Bug Fix: Fix bug where credentials weren't refreshed during retry loop.
v1.33.8 (2025-01-15)
Dependency Update: Updated to the latest SDK module versions
v1.33.7 (2025-01-14)
No change notes available for this release.
v1.33.6 (2025-01-10)
Documentation: Fixed typos in the descriptions.
v1.33.5 (2025-01-09)
Dependency Update: Updated to the latest SDK module versions
v1.33.4 (2025-01-08)
No change notes available for this release.
v1.33.3 (2024-12-19)
Dependency Update: Updated to the latest SDK module versions
v1.33.2 (2024-12-02)
Dependency Update: Updated to the latest SDK module versions
v1.33.1 (2024-11-18)
Dependency Update: Update to smithy-go v1.22.1.
Dependency Update: Updated to the latest SDK module versions
v1.33.0 (2024-11-14)
Feature: This release introduces the new API 'AssumeRoot', which returns short-term credentials that you can use to perform privileged tasks.
v1.32.4 (2024-11-06)
Dependency Update: Updated to the latest SDK module versions
v1.32.3 (2024-10-28)
Dependency Update: Updated to the latest SDK module versions
v1.32.2 (2024-10-08)
Dependency Update: Updated to the latest SDK module versions
v1.32.1 (2024-10-07)
Dependency Update: Updated to the latest SDK module versions
v1.32.0 (2024-10-04)
Feature: Add support for HTTP client metrics.
Dependency Update: Updated to the latest SDK module versions
v1.31.4 (2024-10-03)
No change notes available for this release.
v1.31.3 (2024-09-27)
No change notes available for this release.
v1.31.2 (2024-09-25)
No change notes available for this release.
v1.31.1 (2024-09-23)
No change notes available for this release.
v1.31.0 (2024-09-20)
Feature: Add tracing and metrics support to service clients.
Dependency Update: Updated to the latest SDK module versions
v1.30.8 (2024-09-17)
Bug Fix: BREAKFIX: Only generate AccountIDEndpointMode config for services that use it. This is a compiler break, but removes no actual functionality, as no services currently use the account ID in endpoint resolution.
v1.30.7 (2024-09-04)
No change notes available for this release.
v1.30.6 (2024-09-03)
Dependency Update: Updated to the latest SDK module versions
v1.30.5 (2024-08-22)
No change notes available for this release.
v1.30.4 (2024-08-15)
Dependency Update: Bump minimum Go version to 1.21.
Dependency Update: Updated to the latest SDK module versions
v1.30.3 (2024-07-10.2)
Dependency Update: Updated to the latest SDK module versions
v1.30.2 (2024-07-10)
Dependency Update: Updated to the latest SDK module versions
v1.30.1 (2024-06-28)
Dependency Update: Updated to the latest SDK module versions
v1.30.0 (2024-06-26)
Feature: Support list-of-string endpoint parameter.
v1.29.1 (2024-06-19)
Dependency Update: Updated to the latest SDK module versions
v1.29.0 (2024-06-18)
Feature: Track usage of various AWS SDK features in user-agent string.
Dependency Update: Updated to the latest SDK module versions
v1.28.13 (2024-06-17)
Dependency Update: Updated to the latest SDK module versions
v1.28.12 (2024-06-07)
Bug Fix: Add clock skew correction on all service clients
Dependency Update: Updated to the latest SDK module versions
v1.28.11 (2024-06-03)
Dependency Update: Updated to the latest SDK module versions
v1.28.10 (2024-05-23)
No change notes available for this release.
v1.28.9 (2024-05-16)
Dependency Update: Updated to the latest SDK module versions
v1.28.8 (2024-05-15)
Dependency Update: Updated to the latest SDK module versions
v1.28.7 (2024-05-08)
Bug Fix: GoDoc improvement
v1.28.6 (2024-03-29)
Dependency Update: Updated to the latest SDK module versions
v1.28.5 (2024-03-18)
Dependency Update: Updated to the latest SDK module versions
v1.28.4 (2024-03-07)
Bug Fix: Remove dependency on go-cmp.
Dependency Update: Updated to the latest SDK module versions
v1.28.3 (2024-03-05)
Dependency Update: Updated to the latest SDK module versions
v1.28.2 (2024-03-04)
Bug Fix: Update internal/presigned-url dependency for corrected API name.
Dependency Update: Updated to the latest SDK module versions
v1.28.1 (2024-02-23)
Bug Fix: Move all common, SDK-side middleware stack ops into the service client module to prevent cross-module compatibility issues in the future.
Dependency Update: Updated to the latest SDK module versions
v1.28.0 (2024-02-22)
Feature: Add middleware stack snapshot tests.
v1.27.2 (2024-02-21)
Dependency Update: Updated to the latest SDK module versions
v1.27.1 (2024-02-20)
Bug Fix: When sourcing values for a service's EndpointParameters, the lack of a configured region (i.e. options.Region == "") will now translate to a nil value for EndpointParameters.Region instead of a pointer to the empty string "". This will result in a much more explicit error when calling an operation instead of an obscure hostname lookup failure.
v1.27.0 (2024-02-13)
Feature: Bump minimum Go version to 1.20 per our language support policy.
Dependency Update: Updated to the latest SDK module versions
v1.26.7 (2024-01-04)
Dependency Update: Updated to the latest SDK module versions
v1.26.6 (2023-12-20)
No change notes available for this release.
v1.26.5 (2023-12-08)
Bug Fix: Reinstate presence of default Retryer in functional options, but still respect max attempts set therein.
v1.26.4 (2023-12-07)
Dependency Update: Updated to the latest SDK module versions
v1.26.3 (2023-12-06)
Bug Fix: Restore pre-refactor auth behavior where all operations could technically be performed anonymously.
Bug Fix: STS AssumeRoleWithSAML and AssumeRoleWithWebIdentity would incorrectly attempt to use SigV4 authentication.
v1.26.2 (2023-12-01)
Bug Fix: Correct wrapping of errors in authentication workflow.
Bug Fix: Correctly recognize cache-wrapped instances of AnonymousCredentials at client construction.
Dependency Update: Updated to the latest SDK module versions
v1.26.1 (2023-11-30)
Dependency Update: Updated to the latest SDK module versions
v1.26.0 (2023-11-29)
Feature: Expose Options() accessor on service clients.
Documentation: Documentation updates for AWS Security Token Service.
Dependency Update: Updated to the latest SDK module versions
v1.25.6 (2023-11-28.2)
Dependency Update: Updated to the latest SDK module versions
v1.25.5 (2023-11-28)
Bug Fix: Respect setting RetryMaxAttempts in functional options at client construction.
v1.25.4 (2023-11-20)
Dependency Update: Updated to the latest SDK module versions
v1.25.3 (2023-11-17)
Documentation: API updates for the AWS Security Token Service
v1.25.2 (2023-11-15)
Dependency Update: Updated to the latest SDK module versions
v1.25.1 (2023-11-09)
Dependency Update: Updated to the latest SDK module versions
v1.25.0 (2023-11-01)
Feature: Adds support for configured endpoints via environment variables and the AWS shared configuration file.
Dependency Update: Updated to the latest SDK module versions
v1.24.0 (2023-10-31)
Feature: BREAKING CHANGE: Bump minimum go version to 1.19 per the revised go version support policy.
Dependency Update: Updated to the latest SDK module versions
v1.23.2 (2023-10-12)
Dependency Update: Updated to the latest SDK module versions
v1.23.1 (2023-10-06)
Dependency Update: Updated to the latest SDK module versions
v1.23.0 (2023-10-02)
Feature: STS API updates for assumeRole
v1.22.0 (2023-09-18)
Announcement: [BREAKFIX] Change in MaxResults datatype from value to pointer type in cognito-sync service.
Feature: Adds several endpoint ruleset changes across all models: smaller rulesets, removed non-unique regional endpoints, fixes FIPS and DualStack endpoints, and make region not required in SDK::Endpoint. Additional breakfix to cognito-sync field.
v1.21.5 (2023-08-21)
Dependency Update: Updated to the latest SDK module versions
v1.21.4 (2023-08-18)
Dependency Update: Updated to the latest SDK module versions
v1.21.3 (2023-08-17)
Dependency Update: Updated to the latest SDK module versions
v1.21.2 (2023-08-07)
Dependency Update: Updated to the latest SDK module versions
v1.21.1 (2023-08-01)
No change notes available for this release.
v1.21.0 (2023-07-31)
Feature: Adds support for smithy-modeled endpoint resolution. A new rules-based endpoint resolution will be added to the SDK which will supercede and deprecate existing endpoint resolution. Specifically, EndpointResolver will be deprecated while BaseEndpoint and EndpointResolverV2 will take its place. For more information, please see the Endpoints section in our Developer Guide.
Dependency Update: Updated to the latest SDK module versions
v1.20.1 (2023-07-28)
Dependency Update: Updated to the latest SDK module versions
v1.20.0 (2023-07-25)
Feature: API updates for the AWS Security Token Service
v1.19.3 (2023-07-13)
Dependency Update: Updated to the latest SDK module versions
v1.19.2 (2023-06-15)
No change notes available for this release.
v1.19.1 (2023-06-13)
Dependency Update: Updated to the latest SDK module versions
v1.19.0 (2023-05-08)
Feature: Documentation updates for AWS Security Token Service.
v1.18.11 (2023-05-04)
No change notes available for this release.
v1.18.10 (2023-04-24)
Dependency Update: Updated to the latest SDK module versions
v1.18.9 (2023-04-10)
No change notes available for this release.
v1.18.8 (2023-04-07)
Dependency Update: Updated to the latest SDK module versions
v1.18.7 (2023-03-21)
Dependency Update: Updated to the latest SDK module versions
v1.18.6 (2023-03-10)
Dependency Update: Updated to the latest SDK module versions
v1.18.5 (2023-02-22)
Bug Fix: Prevent nil pointer dereference when retrieving error codes.
v1.18.4 (2023-02-20)
Dependency Update: Updated to the latest SDK module versions
v1.18.3 (2023-02-03)
Dependency Update: Updated to the latest SDK module versions
Dependency Update: Upgrade smithy to 1.27.2 and correct empty query list serialization.
v1.18.2 (2023-01-25)
Documentation: Doc only change to update wording in a key topic
v1.18.1 (2023-01-23)
No change notes available for this release.
v1.18.0 (2023-01-05)
Feature: Add ErrorCodeOverride field to all error structs (aws/smithy-go#401).
v1.17.7 (2022-12-15)
Dependency Update: Updated to the latest SDK module versions
v1.17.6 (2022-12-02)
Dependency Update: Updated to the latest SDK module versions
v1.17.5 (2022-11-22)
No change notes available for this release.
v1.17.4 (2022-11-17)
Documentation: Documentation updates for AWS Security Token Service.
v1.17.3 (2022-11-16)
No change notes available for this release.
v1.17.2 (2022-11-10)
No change notes available for this release.
v1.17.1 (2022-10-24)
Dependency Update: Updated to the latest SDK module versions
v1.17.0 (2022-10-21)
Feature: Add presign functionality for sts:AssumeRole operation
Dependency Update: Updated to the latest SDK module versions
v1.16.19 (2022-09-20)
Dependency Update: Updated to the latest SDK module versions
v1.16.18 (2022-09-14)
Dependency Update: Updated to the latest SDK module versions
v1.16.17 (2022-09-02)
Dependency Update: Updated to the latest SDK module versions
v1.16.16 (2022-08-31)
Dependency Update: Updated to the latest SDK module versions
v1.16.15 (2022-08-30)
No change notes available for this release.
v1.16.14 (2022-08-29)
Dependency Update: Updated to the latest SDK module versions
v1.16.13 (2022-08-11)
Dependency Update: Updated to the latest SDK module versions
v1.16.12 (2022-08-09)
Dependency Update: Updated to the latest SDK module versions
v1.16.11 (2022-08-08)
Dependency Update: Updated to the latest SDK module versions
v1.16.10 (2022-08-01)
Dependency Update: Updated to the latest SDK module versions
v1.16.9 (2022-07-05)
Dependency Update: Updated to the latest SDK module versions
v1.16.8 (2022-06-29)
Dependency Update: Updated to the latest SDK module versions
v1.16.7 (2022-06-07)
Dependency Update: Updated to the latest SDK module versions
v1.16.6 (2022-05-17)
Dependency Update: Updated to the latest SDK module versions
v1.16.5 (2022-05-16)
Documentation: Documentation updates for AWS Security Token Service.
v1.16.4 (2022-04-25)
Dependency Update: Updated to the latest SDK module versions
v1.16.3 (2022-03-30)
Dependency Update: Updated to the latest SDK module versions
v1.16.2 (2022-03-24)
Dependency Update: Updated to the latest SDK module versions
v1.16.1 (2022-03-23)
Dependency Update: Updated to the latest SDK module versions
v1.16.0 (2022-03-08)
Feature: Updated github.com/aws/smithy-go to latest version
Documentation: Updated service client model to latest release.
Dependency Update: Updated to the latest SDK module versions
v1.15.0 (2022-02-24)
Feature: API client updated
Feature: Adds RetryMaxAttempts and RetryMod to API client Options. This allows the API clients' default Retryer to be configured from the shared configuration files or environment variables. Adding a new Retry mode of Adaptive. Adaptive retry mode is an experimental mode, adding client rate limiting when throttles reponses are received from an API. See retry.AdaptiveMode for more details, and configuration options.
Feature: Updated github.com/aws/smithy-go to latest version
Dependency Update: Updated to the latest SDK module versions
v1.14.0 (2022-01-14)
Feature: Updated github.com/aws/smithy-go to latest version
Dependency Update: Updated to the latest SDK module versions
v1.13.0 (2022-01-07)
Feature: Updated github.com/aws/smithy-go to latest version
Dependency Update: Updated to the latest SDK module versions
v1.12.0 (2021-12-21)
Feature: Updated to latest service endpoints
v1.11.1 (2021-12-02)
Bug Fix: Fixes a bug that prevented aws.EndpointResolverWithOptions from being used by the service client. (#1514)
Dependency Update: Updated to the latest SDK module versions
v1.11.0 (2021-11-30)
Feature: API client updated
v1.10.1 (2021-11-19)
Dependency Update: Updated to the latest SDK module versions
v1.10.0 (2021-11-12)
Feature: Service clients now support custom endpoints that have an initial URI path defined.
v1.9.0 (2021-11-06)
Feature: The SDK now supports configuration of FIPS and DualStack endpoints using environment variables, shared configuration, or programmatically.
Feature: Updated github.com/aws/smithy-go to latest version
Dependency Update: Updated to the latest SDK module versions
v1.8.0 (2021-10-21)
Feature: API client updated
Feature: Updated to latest version
Dependency Update: Updated to the latest SDK module versions
v1.7.2 (2021-10-11)
Dependency Update: Updated to the latest SDK module versions
v1.7.1 (2021-09-17)
Dependency Update: Updated to the latest SDK module versions
v1.7.0 (2021-08-27)
Feature: Updated github.com/aws/smithy-go to latest version
Dependency Update: Updated to the latest SDK module versions
v1.6.2 (2021-08-19)
Dependency Update: Updated to the latest SDK module versions
v1.6.1 (2021-08-04)
Dependency Update: Updated github.com/aws/smithy-go to latest version.
Dependency Update: Updated to the latest SDK module versions
v1.6.0 (2021-07-15)
Feature: The ErrorCode method on generated service error types has been corrected to match the API model.
Documentation: Updated service model to latest revision.
Dependency Update: Updated github.com/aws/smithy-go to latest version
Dependency Update: Updated to the latest SDK module versions
v1.5.0 (2021-06-25)
Feature: API client updated
Feature: Updated github.com/aws/smithy-go to latest version
Dependency Update: Updated to the latest SDK module versions
v1.4.1 (2021-05-20)
Dependency Update: Updated to the latest SDK module versions
v1.4.0 (2021-05-14)
Feature: Constant has been added to modules to enable runtime version inspection for reporting.
Dependency Update: Updated to the latest SDK module versions