Sourced from io.ktor:ktor-client-core's releases.

3.6.0

Published 16 September 2026

Features

• KTOR-8596 OpenID Connect (OAuth2) auto-discover & configuration
• KTOR-9645 Client curated multi-platform facade module
• KTOR-8883 Support nested jars in static resources
• KTOR-8672 Support at least zstd and deflate formats of precompressed files
• KTOR-8595 Auth JWK Support (auto-discover)
• KTOR-9841 OIDC Server Plugin
• KTOR-9654 Override fetch in JS engine
• KTOR-9785 Typesafe Authentication DSL
• KTOR-462 Async CIO DNS resolver with timeout
• KTOR-9709 Add resource attribute for client resources plugin
• KTOR-5009 ContentNegotiation: Add a way to prevent changing Accept and Content-Type headers
• KTOR-9776 OpenAPI: Support the "const" validation keyword
• KTOR-7468 DefaultConversionService: Support Uuid type introduced in Kotlin 2.0
• KTOR-9578 HttpCache add method for clearing
• KTOR-9590 OpenAPI Contextual JSON schema inference support
• KTOR-6610 Log which ConfigLoader has been used for loading the server configuration
• KTOR-9735 Commonize HttpCache FileCacheStorage
• KTOR-8953 WebRTC client on JVM
• KTOR-9674 UDP support for Node.js targets
• KTOR-9612 Add text/markdown to the ContentType constants

Improvements

• KTOR-9876 Typo in KDoc for routing function: "for the this Application".
• KTOR-9778 Character classification in ktor-http hot paths uses boxed Set lookups and per-symbol encoder allocations
• KTOR-9702 Duplicate code in ByteReadChannel
• KTOR-9716 Make ApplicationCallPipeline.ApplicationPhase.Validators public in 3.6.0
• KTOR-9734 Use TagConsumer in respondHtmlFragment lambda receiver
• KTOR-5577 Support nullable types in ApplicationCall.receive
• KTOR-2367 OAuth: clients expect to get authenticated once per "session" for all protected routes
• KTOR-8594 Auth: Non-optional principal is of nullable type
• KTOR-9816 Escape $ in application.yaml file
• KTOR-8193 Unnecessary blocking in OutputStream wrapper

Bugfixes

• KTOR-8705 testApplication: call coroutine context isn't preserved when responding with ChannelWriterContent
• KTOR-9248 JWTAuthenticationProvider silently swallows exceptions
• KTOR-9892 Digest Auth client: nc and qop are not handled according to RFC 7616
• KTOR-9891 CIO on Kotlin/Native collapses above ~50 connections: HttpHeadersMap pools contend on an allocating SynchronizedObject
• KTOR-9794 Digest Auth: NullPointerException when the server does not expect Digest auth
• KTOR-9788 Netty: engine double-responds after its built-in 400, crashing the call-handler coroutine with "Headers can no longer be set because response was already completed"
• KTOR-9834 HttpClient eagerly initializes SLF4J during Android startup
• KTOR-9701 Jackson/Gson converters waste time on unnecessary Dispatchers.IO dispatch
• KTOR-9832 Apache5: Upgrading Apache HttpClient5 to version 5.6 breaks the Ktor client with Content-Length mismatch error for any gzipped content
• KTOR-9870 OkHttp: Reduce coroutine dispatching and allocations while reading response bodies
• KTOR-9627 Cancel blocking bridges when coroutine is cancelled
• KTOR-7067 Ktor Cookie.parseClientCookiesHeader returns Map, which breaks Cookie header contract

... (truncated)

Sourced from io.ktor:ktor-client-core's changelog.

3.6.0

Published 16 September 2026

Features

• KTOR-8596 OpenID Connect (OAuth2) auto-discover & configuration
• KTOR-9645 Client curated multi-platform facade module
• KTOR-8883 Support nested jars in static resources
• KTOR-8672 Support at least zstd and deflate formats of precompressed files
• KTOR-8595 Auth JWK Support (auto-discover)
• KTOR-9841 OIDC Server Plugin
• KTOR-9654 Override fetch in JS engine
• KTOR-9785 Typesafe Authentication DSL
• KTOR-462 Async CIO DNS resolver with timeout
• KTOR-9709 Add resource attribute for client resources plugin
• KTOR-5009 ContentNegotiation: Add a way to prevent changing Accept and Content-Type headers
• KTOR-9776 OpenAPI: Support the "const" validation keyword
• KTOR-7468 DefaultConversionService: Support Uuid type introduced in Kotlin 2.0
• KTOR-9578 HttpCache add method for clearing
• KTOR-9590 OpenAPI Contextual JSON schema inference support
• KTOR-6610 Log which ConfigLoader has been used for loading the server configuration
• KTOR-9735 Commonize HttpCache FileCacheStorage
• KTOR-8953 WebRTC client on JVM
• KTOR-9674 UDP support for Node.js targets
• KTOR-9612 Add text/markdown to the ContentType constants

Improvements

• KTOR-9876 Typo in KDoc for routing function: "for the this Application".
• KTOR-9778 Character classification in ktor-http hot paths uses boxed Set lookups and per-symbol encoder allocations
• KTOR-9702 Duplicate code in ByteReadChannel
• KTOR-9716 Make ApplicationCallPipeline.ApplicationPhase.Validators public in 3.6.0
• KTOR-9734 Use TagConsumer in respondHtmlFragment lambda receiver
• KTOR-5577 Support nullable types in ApplicationCall.receive
• KTOR-2367 OAuth: clients expect to get authenticated once per "session" for all protected routes
• KTOR-8594 Auth: Non-optional principal is of nullable type
• KTOR-9816 Escape $ in application.yaml file
• KTOR-8193 Unnecessary blocking in OutputStream wrapper

Bugfixes

• KTOR-8705 testApplication: call coroutine context isn't preserved when responding with ChannelWriterContent
• KTOR-9248 JWTAuthenticationProvider silently swallows exceptions
• KTOR-9892 Digest Auth client: nc and qop are not handled according to RFC 7616
• KTOR-9891 CIO on Kotlin/Native collapses above ~50 connections: HttpHeadersMap pools contend on an allocating SynchronizedObject
• KTOR-9794 Digest Auth: NullPointerException when the server does not expect Digest auth
• KTOR-9788 Netty: engine double-responds after its built-in 400, crashing the call-handler coroutine with "Headers can no longer be set because response was already completed"
• KTOR-9834 HttpClient eagerly initializes SLF4J during Android startup
• KTOR-9701 Jackson/Gson converters waste time on unnecessary Dispatchers.IO dispatch
• KTOR-9832 Apache5: Upgrading Apache HttpClient5 to version 5.6 breaks the Ktor client with Content-Length mismatch error for any gzipped content
• KTOR-9870 OkHttp: Reduce coroutine dispatching and allocations while reading response bodies
• KTOR-9627 Cancel blocking bridges when coroutine is cancelled
• KTOR-7067 Ktor Cookie.parseClientCookiesHeader returns Map, which breaks Cookie header contract

... (truncated)

• 111c580 Release 3.6.0 (#5882)
• 1e4186c KTOR-9876 Fix typo in Application.routing KDoc (#5876)
• 6930eee Fix KTOR-9892 Digest Auth client: nc and qop ... (#5875)
• 875b2f0 Fix KTOR-9794 Digest Auth: NullPointerException when the server does not expe...
• dc56137 KTOR-8705 Pass coroutine context to the channel writer (#5868)
• 55f6e71 Fix KTOR-9640 forward autoFlush in reader/writer helpers
• 2b04a1f Fix KTOR-9248 JWTAuthenticationProvider silently swallows exceptions (#5877)
• 702ff9f KTOR-9889 Fix deadlock in concurrent module loading with Dependency Injection...
• 1fab5f1 Reject Accept entries with q=0 in ContentNegotiation (#5873)
• b06c3b5 KTOR-9891 Delegate SynchronizedObject to kotlinx.atomicfu on Native (#5874)
• Additional commits viewable in compare view

Sourced from io.ktor:ktor-client-cio's releases.

3.6.0

Published 16 September 2026

Features

• KTOR-8596 OpenID Connect (OAuth2) auto-discover & configuration
• KTOR-9645 Client curated multi-platform facade module
• KTOR-8883 Support nested jars in static resources
• KTOR-8672 Support at least zstd and deflate formats of precompressed files
• KTOR-8595 Auth JWK Support (auto-discover)
• KTOR-9841 OIDC Server Plugin
• KTOR-9654 Override fetch in JS engine
• KTOR-9785 Typesafe Authentication DSL
• KTOR-462 Async CIO DNS resolver with timeout
• KTOR-9709 Add resource attribute for client resources plugin
• KTOR-5009 ContentNegotiation: Add a way to prevent changing Accept and Content-Type headers
• KTOR-9776 OpenAPI: Support the "const" validation keyword
• KTOR-7468 DefaultConversionService: Support Uuid type introduced in Kotlin 2.0
• KTOR-9578 HttpCache add method for clearing
• KTOR-9590 OpenAPI Contextual JSON schema inference support
• KTOR-6610 Log which ConfigLoader has been used for loading the server configuration
• KTOR-9735 Commonize HttpCache FileCacheStorage
• KTOR-8953 WebRTC client on JVM
• KTOR-9674 UDP support for Node.js targets
• KTOR-9612 Add text/markdown to the ContentType constants

Improvements

• KTOR-9876 Typo in KDoc for routing function: "for the this Application".
• KTOR-9778 Character classification in ktor-http hot paths uses boxed Set lookups and per-symbol encoder allocations
• KTOR-9702 Duplicate code in ByteReadChannel
• KTOR-9716 Make ApplicationCallPipeline.ApplicationPhase.Validators public in 3.6.0
• KTOR-9734 Use TagConsumer in respondHtmlFragment lambda receiver
• KTOR-5577 Support nullable types in ApplicationCall.receive
• KTOR-2367 OAuth: clients expect to get authenticated once per "session" for all protected routes
• KTOR-8594 Auth: Non-optional principal is of nullable type
• KTOR-9816 Escape $ in application.yaml file
• KTOR-8193 Unnecessary blocking in OutputStream wrapper

Bugfixes

• KTOR-8705 testApplication: call coroutine context isn't preserved when responding with ChannelWriterContent
• KTOR-9248 JWTAuthenticationProvider silently swallows exceptions
• KTOR-9892 Digest Auth client: nc and qop are not handled according to RFC 7616
• KTOR-9891 CIO on Kotlin/Native collapses above ~50 connections: HttpHeadersMap pools contend on an allocating SynchronizedObject
• KTOR-9794 Digest Auth: NullPointerException when the server does not expect Digest auth
• KTOR-9788 Netty: engine double-responds after its built-in 400, crashing the call-handler coroutine with "Headers can no longer be set because response was already completed"
• KTOR-9834 HttpClient eagerly initializes SLF4J during Android startup
• KTOR-9701 Jackson/Gson converters waste time on unnecessary Dispatchers.IO dispatch
• KTOR-9832 Apache5: Upgrading Apache HttpClient5 to version 5.6 breaks the Ktor client with Content-Length mismatch error for any gzipped content
• KTOR-9870 OkHttp: Reduce coroutine dispatching and allocations while reading response bodies
• KTOR-9627 Cancel blocking bridges when coroutine is cancelled
• KTOR-7067 Ktor Cookie.parseClientCookiesHeader returns Map, which breaks Cookie header contract

... (truncated)

Sourced from io.ktor:ktor-client-cio's changelog.

3.6.0

Published 16 September 2026

Features

• KTOR-8596 OpenID Connect (OAuth2) auto-discover & configuration
• KTOR-9645 Client curated multi-platform facade module
• KTOR-8883 Support nested jars in static resources
• KTOR-8672 Support at least zstd and deflate formats of precompressed files
• KTOR-8595 Auth JWK Support (auto-discover)
• KTOR-9841 OIDC Server Plugin
• KTOR-9654 Override fetch in JS engine
• KTOR-9785 Typesafe Authentication DSL
• KTOR-462 Async CIO DNS resolver with timeout
• KTOR-9709 Add resource attribute for client resources plugin
• KTOR-5009 ContentNegotiation: Add a way to prevent changing Accept and Content-Type headers
• KTOR-9776 OpenAPI: Support the "const" validation keyword
• KTOR-7468 DefaultConversionService: Support Uuid type introduced in Kotlin 2.0
• KTOR-9578 HttpCache add method for clearing
• KTOR-9590 OpenAPI Contextual JSON schema inference support
• KTOR-6610 Log which ConfigLoader has been used for loading the server configuration
• KTOR-9735 Commonize HttpCache FileCacheStorage
• KTOR-8953 WebRTC client on JVM
• KTOR-9674 UDP support for Node.js targets
• KTOR-9612 Add text/markdown to the ContentType constants

Improvements

• KTOR-9876 Typo in KDoc for routing function: "for the this Application".
• KTOR-9778 Character classification in ktor-http hot paths uses boxed Set lookups and per-symbol encoder allocations
• KTOR-9702 Duplicate code in ByteReadChannel
• KTOR-9716 Make ApplicationCallPipeline.ApplicationPhase.Validators public in 3.6.0
• KTOR-9734 Use TagConsumer in respondHtmlFragment lambda receiver
• KTOR-5577 Support nullable types in ApplicationCall.receive
• KTOR-2367 OAuth: clients expect to get authenticated once per "session" for all protected routes
• KTOR-8594 Auth: Non-optional principal is of nullable type
• KTOR-9816 Escape $ in application.yaml file
• KTOR-8193 Unnecessary blocking in OutputStream wrapper

Bugfixes

• KTOR-8705 testApplication: call coroutine context isn't preserved when responding with ChannelWriterContent
• KTOR-9248 JWTAuthenticationProvider silently swallows exceptions
• KTOR-9892 Digest Auth client: nc and qop are not handled according to RFC 7616
• KTOR-9891 CIO on Kotlin/Native collapses above ~50 connections: HttpHeadersMap pools contend on an allocating SynchronizedObject
• KTOR-9794 Digest Auth: NullPointerException when the server does not expect Digest auth
• KTOR-9788 Netty: engine double-responds after its built-in 400, crashing the call-handler coroutine with "Headers can no longer be set because response was already completed"
• KTOR-9834 HttpClient eagerly initializes SLF4J during Android startup
• KTOR-9701 Jackson/Gson converters waste time on unnecessary Dispatchers.IO dispatch
• KTOR-9832 Apache5: Upgrading Apache HttpClient5 to version 5.6 breaks the Ktor client with Content-Length mismatch error for any gzipped content
• KTOR-9870 OkHttp: Reduce coroutine dispatching and allocations while reading response bodies
• KTOR-9627 Cancel blocking bridges when coroutine is cancelled
• KTOR-7067 Ktor Cookie.parseClientCookiesHeader returns Map, which breaks Cookie header contract

... (truncated)

• 111c580 Release 3.6.0 (#5882)
• 1e4186c KTOR-9876 Fix typo in Application.routing KDoc (#5876)
• 6930eee Fix KTOR-9892 Digest Auth client: nc and qop ... (#5875)
• 875b2f0 Fix KTOR-9794 Digest Auth: NullPointerException when the server does not expe...
• dc56137 KTOR-8705 Pass coroutine context to the channel writer (#5868)
• 55f6e71 Fix KTOR-9640 forward autoFlush in reader/writer helpers
• 2b04a1f Fix KTOR-9248 JWTAuthenticationProvider silently swallows exceptions (#5877)
• 702ff9f KTOR-9889 Fix deadlock in concurrent module loading with Dependency Injection...
• 1fab5f1 Reject Accept entries with q=0 in ContentNegotiation (#5873)
• b06c3b5 KTOR-9891 Delegate SynchronizedObject to kotlinx.atomicfu on Native (#5874)
• Additional commits viewable in compare view

Sourced from io.ktor:ktor-client-mock's releases.

3.6.0

Published 16 September 2026

Features

• KTOR-8596 OpenID Connect (OAuth2) auto-discover & configuration
• KTOR-9645 Client curated multi-platform facade module
• KTOR-8883 Support nested jars in static resources
• KTOR-8672 Support at least zstd and deflate formats of precompressed files
• KTOR-8595 Auth JWK Support (auto-discover)
• KTOR-9841 OIDC Server Plugin
• KTOR-9654 Override fetch in JS engine
• KTOR-9785 Typesafe Authentication DSL
• KTOR-462 Async CIO DNS resolver with timeout
• KTOR-9709 Add resource attribute for client resources plugin
• KTOR-5009 ContentNegotiation: Add a way to prevent changing Accept and Content-Type headers
• KTOR-9776 OpenAPI: Support the "const" validation keyword
• KTOR-7468 DefaultConversionService: Support Uuid type introduced in Kotlin 2.0
• KTOR-9578 HttpCache add method for clearing
• KTOR-9590 OpenAPI Contextual JSON schema inference support
• KTOR-6610 Log which ConfigLoader has been used for loading the server configuration
• KTOR-9735 Commonize HttpCache FileCacheStorage
• KTOR-8953 WebRTC client on JVM
• KTOR-9674 UDP support for Node.js targets
• KTOR-9612 Add text/markdown to the ContentType constants

Improvements

• KTOR-9876 Typo in KDoc for routing function: "for the this Application".
• KTOR-9778 Character classification in ktor-http hot paths uses boxed Set lookups and per-symbol encoder allocations
• KTOR-9702 Duplicate code in ByteReadChannel
• KTOR-9716 Make ApplicationCallPipeline.ApplicationPhase.Validators public in 3.6.0
• KTOR-9734 Use TagConsumer in respondHtmlFragment lambda receiver
• KTOR-5577 Support nullable types in ApplicationCall.receive
• KTOR-2367 OAuth: clients expect to get authenticated once per "session" for all protected routes
• KTOR-8594 Auth: Non-optional principal is of nullable type
• KTOR-9816 Escape $ in application.yaml file
• KTOR-8193 Unnecessary blocking in OutputStream wrapper

Bugfixes

• KTOR-8705 testApplication: call coroutine context isn't preserved when responding with ChannelWriterContent
• KTOR-9248 JWTAuthenticationProvider silently swallows exceptions
• KTOR-9892 Digest Auth client: nc and qop are not handled according to RFC 7616
• KTOR-9891 CIO on Kotlin/Native collapses above ~50 connections: HttpHeadersMap pools contend on an allocating SynchronizedObject
• KTOR-9794 Digest Auth: NullPointerException when the server does not expect Digest auth
• KTOR-9788 Netty: engine double-responds after its built-in 400, crashing the call-handler coroutine with "Headers can no longer be set because response was already completed"
• KTOR-9834 HttpClient eagerly initializes SLF4J during Android startup
• KTOR-9701 Jackson/Gson converters waste time on unnecessary Dispatchers.IO dispatch
• KTOR-9832 Apache5: Upgrading Apache HttpClient5 to version 5.6 breaks the Ktor client with Content-Length mismatch error for any gzipped content
• KTOR-9870 OkHttp: Reduce coroutine dispatching and allocations while reading response bodies
• KTOR-9627 Cancel blocking bridges when coroutine is cancelled
• KTOR-7067 Ktor Cookie.parseClientCookiesHeader returns Map, which breaks Cookie header contract

... (truncated)

Sourced from io.ktor:ktor-client-mock's changelog.

3.6.0

Published 16 September 2026

Features

• KTOR-8596 OpenID Connect (OAuth2) auto-discover & configuration
• KTOR-9645 Client curated multi-platform facade module
• KTOR-8883 Support nested jars in static resources
• KTOR-8672 Support at least zstd and deflate formats of precompressed files
• KTOR-8595 Auth JWK Support (auto-discover)
• KTOR-9841 OIDC Server Plugin
• KTOR-9654 Override fetch in JS engine
• KTOR-9785 Typesafe Authentication DSL
• KTOR-462 Async CIO DNS resolver with timeout
• KTOR-9709 Add resource attribute for client resources plugin
• KTOR-5009 ContentNegotiation: Add a way to prevent changing Accept and Content-Type headers
• KTOR-9776 OpenAPI: Support the "const" validation keyword
• KTOR-7468 DefaultConversionService: Support Uuid type introduced in Kotlin 2.0
• KTOR-9578 HttpCache add method for clearing
• KTOR-9590 OpenAPI Contextual JSON schema inference support
• KTOR-6610 Log which ConfigLoader has been used for loading the server configuration
• KTOR-9735 Commonize HttpCache FileCacheStorage
• KTOR-8953 WebRTC client on JVM
• KTOR-9674 UDP support for Node.js targets
• KTOR-9612 Add text/markdown to the ContentType constants

Improvements

• KTOR-9876 Typo in KDoc for routing function: "for the this Application".
• KTOR-9778 Character classification in ktor-http hot paths uses boxed Set lookups and per-symbol encoder allocations
• KTOR-9702 Duplicate code in ByteReadChannel
• KTOR-9716 Make ApplicationCallPipeline.ApplicationPhase.Validators public in 3.6.0
• KTOR-9734 Use TagConsumer in respondHtmlFragment lambda receiver
• KTOR-5577 Support nullable types in ApplicationCall.receive
• KTOR-2367 OAuth: clients expect to get authenticated once per "session" for all protected routes
• KTOR-8594 Auth: Non-optional principal is of nullable type
• KTOR-9816 Escape $ in application.yaml file
• KTOR-8193 Unnecessary blocking in OutputStream wrapper

Bugfixes

• KTOR-8705 testApplication: call coroutine context isn't preserved when responding with ChannelWriterContent
• KTOR-9248 JWTAuthenticationProvider silently swallows exceptions
• KTOR-9892 Digest Auth client: nc and qop are not handled according to RFC 7616
• KTOR-9891 CIO on Kotlin/Native collapses above ~50 connections: HttpHeadersMap pools contend on an allocating SynchronizedObject
• KTOR-9794 Digest Auth: NullPointerException when the server does not expect Digest auth
• KTOR-9788 Netty: engine double-responds after its built-in 400, crashing the call-handler coroutine with "Headers can no longer be set because response was already completed"
• KTOR-9834 HttpClient eagerly initializes SLF4J during Android startup
• KTOR-9701 Jackson/Gson converters waste time on unnecessary Dispatchers.IO dispatch
• KTOR-9832 Apache5: Upgrading Apache HttpClient5 to version 5.6 breaks the Ktor client with Content-Length mismatch error for any gzipped content
• KTOR-9870 OkHttp: Reduce coroutine dispatching and allocations while reading response bodies
• KTOR-9627 Cancel blocking bridges when coroutine is cancelled
• KTOR-7067 Ktor Cookie.parseClientCookiesHeader returns Map, which breaks Cookie header contract

... (truncated)

• 111c580 Release 3.6.0 (#5882)
• 1e4186c KTOR-9876 Fix typo in Application.routing KDoc (#5876)
• 6930eee Fix KTOR-9892 Digest Auth client: nc and qop ... (#5875)
• 875b2f0 Fix KTOR-9794 Digest Auth: NullPointerException when the server does not expe...
• dc56137 KTOR-8705 Pass coroutine context to the channel writer (#5868)
• 55f6e71 Fix KTOR-9640 forward autoFlush in reader/writer helpers
• 2b04a1f Fix KTOR-9248 JWTAuthenticationProvider silently swallows exceptions (#5877)
• 702ff9f KTOR-9889 Fix deadlock in concurrent module loading with Dependency Injection...
• 1fab5f1 Reject Accept entries with q=0 in ContentNegotiation (#5873)
• b06c3b5 KTOR-9891 Delegate SynchronizedObject to kotlinx.atomicfu on Native (#5874)
• Additional commits viewable in compare view

Sourced from io.ktor:ktor-client-content-negotiation's releases.

3.6.0

Published 16 September 2026

Features

• KTOR-8596 OpenID Connect (OAuth2) auto-discover & configuration
• KTOR-9645 Client curated multi-platform facade module
• KTOR-8883 Support nested jars in static resources
• KTOR-8672 Support at least zstd and deflate formats of precompressed files
• KTOR-8595 Auth JWK Support (auto-discover)
• KTOR-9841 OIDC Server Plugin
• KTOR-9654 Override fetch in JS engine
• KTOR-9785 Typesafe Authentication DSL
• KTOR-462 Async CIO DNS resolver with timeout
• KTOR-9709 Add resource attribute for client resources plugin
• KTOR-5009 ContentNegotiation: Add a way to prevent changing Accept and Content-Type headers
• KTOR-9776 OpenAPI: Support the "const" validation keyword
• KTOR-7468 DefaultConversionService: Support Uuid type introduced in Kotlin 2.0
• KTOR-9578 HttpCache add method for clearing
• KTOR-9590 OpenAPI Contextual JSON schema inference support
• KTOR-6610 Log which ConfigLoader has been used for loading the server configuration
• KTOR-9735 Commonize HttpCache FileCacheStorage
• KTOR-8953 WebRTC client on JVM
• KTOR-9674 UDP support for Node.js targets
• KTOR-9612 Add text/markdown to the ContentType constants

Improvements

• KTOR-9876 Typo in KDoc for routing function: "for the this Application".
• KTOR-9778 Character classification in ktor-http hot paths uses boxed Set lookups and per-symbol encoder allocations
• KTOR-9702 Duplicate code in ByteReadChannel
• KTOR-9716 Make ApplicationCallPipeline.ApplicationPhase.Validators public in 3.6.0
• KTOR-9734 Use TagConsumer in respondHtmlFragment lambda receiver
• KTOR-5577 Support nullable types in ApplicationCall.receive
• KTOR-2367 OAuth: clients expect to get authenticated once per "session" for all protected routes
• KTOR-8594 Auth: Non-optional principal is of nullable type
• KTOR-9816 Escape $ in application.yaml file
• KTOR-8193 Unnecessary blocking in OutputStream wrapper

Bugfixes

• KTOR-8705 testApplication: call coroutine context isn't preserved when responding with ChannelWriterContent
• KTOR-9248 JWTAuthenticationProvider silently swallows exceptions
• KTOR-9892 Digest Auth client: nc and qop are not handled according to RFC 7616
• KTOR-9891 CIO on Kotlin/Native collapses above ~50 connections: HttpHeadersMap pools contend on an allocating SynchronizedObject
• KTOR-9794 Digest Auth: NullPointerException when the server does not expect Digest auth
• KTOR-9788 Netty: engine double-responds after its built-in 400, crashing the call-handler coroutine with "Headers can no longer be set because response was already completed"
• KTOR-9834 HttpClient eagerly initializes SLF4J during Android startup
• KTOR-9701 Jackson/Gson converters waste time on unnecessary Dispatchers.IO dispatch
• KTOR-9832 Apache5: Upgrading Apache HttpClient5 to version 5.6 breaks the Ktor client with Content-Length mismatch error for any gzipped content
• KTOR-9870 OkHttp: Reduce coroutine dispatching and allocations while reading response bodies
• KTOR-9627 Cancel blocking bridges when coroutine is cancelled
• KTOR-7067 Ktor Cookie.parseClientCookiesHeader returns Map, which breaks Cookie header contract

... (truncated)

Sourced from io.ktor:ktor-client-content-negotiation's changelog.

3.6.0

Published 16 September 2026

Features

• KTOR-8596 OpenID Connect (OAuth2) auto-discover & configuration
• KTOR-9645 Client curated multi-platform facade module
• KTOR-8883 Support nested jars in static resources
• KTOR-8672 Support at least zstd and deflate formats of precompressed files
• KTOR-8595 Auth JWK Support (auto-discover)
• KTOR-9841 OIDC Server Plugin
• KTOR-9654 Override fetch in JS engine
• KTOR-9785 Typesafe Authentication DSL
• KTOR-462 Async CIO DNS resolver with timeout
• KTOR-9709 Add resource attribute for client resources plugin
• KTOR-5009 ContentNegotiation: Add a way to prevent changing Accept and Content-Type headers
• KTOR-9776 OpenAPI: Support the "const" validation keyword
• KTOR-7468 DefaultConversionService: Support Uuid type introduced in Kotlin 2.0
• KTOR-9578 HttpCache add method for clearing
• KTOR-9590 OpenAPI Contextual JSON schema inference support
• KTOR-6610 Log which ConfigLoader has been used for loading the server configuration
• KTOR-9735 Commonize HttpCache FileCacheStorage
• KTOR-8953 WebRTC client on JVM
• KTOR-9674 UDP support for Node.js targets
• KTOR-9612 Add text/markdown to the ContentType constants

Improvements

• KTOR-9876 Typo in KDoc for routing function: "for the this Application".
• KTOR-9778 Character classification in ktor-http hot paths uses boxed Set lookups and per-symbol encoder allocations
• KTOR-9702 Duplicate code in ByteReadChannel
• KTOR-9716 Make ApplicationCallPipeline.ApplicationPhase.Validators public in 3.6.0
• KTOR-9734 Use TagConsumer in respondHtmlFragment lambda receiver
• KTOR-5577 Support nullable types in ApplicationCall.receive
• KTOR-2367 OAuth: clients expect to get authenticated once per "session" for all protected routes
• KTOR-8594 Auth: Non-optional principal is of nullable type
• KTOR-9816 Escape $ in application.yaml file
• KTOR-8193 Unnecessary blocking in OutputStream wrapper

Bugfixes

• KTOR-8705 testApplication: call coroutine context isn't preserved when responding with ChannelWriterContent
• KTOR-9248 JWTAuthenticationProvider silently swallows exceptions
• KTOR-9892 Digest Auth client: nc and qop are not handled according to RFC 7616
• KTOR-9891 CIO on Kotlin/Native collapses above ~50 connections: HttpHeadersMap pools contend on an allocating SynchronizedObject
• KTOR-9794 Digest Auth: NullPointerException when the server does not expect Digest auth
• KTOR-9788 Netty: engine double-responds after its built-in 400, crashing the call-handler coroutine with "Headers can no longer be set because response was already completed"
• KTOR-9834 HttpClient eagerly initializes SLF4J during Android startup
• KTOR-9701 Jackson/Gson converters waste time on unnecessary Dispatchers.IO dispatch
• KTOR-9832 Apache5: Upgrading Apache HttpClient5 to version 5.6 breaks the Ktor client with Content-Length mismatch error for any gzipped content
• KTOR-9870 OkHttp: Reduce coroutine dispatching and allocations while reading response bodies
• KTOR-9627 Cancel blocking bridges when coroutine is cancelled
• KTOR-7067 Ktor Cookie.parseClientCookiesHeader returns Map, which breaks Cookie header contract

... (truncated)

• 111c580 Release 3.6.0 (#5882)
• 1e4186c KTOR-9876 Fix typo in Application.routing KDoc (#5876)
• 6930eee Fix KTOR-9892 Digest Auth client: nc and qop ... (#5875)
• 875b2f0 Fix KTOR-9794 Digest Auth: NullPointerException when the server does not expe...
• dc56137 KTOR-8705 Pass coroutine context to the channel writer (#5868)
• 55f6e71 Fix KTOR-9640 forward autoFlush in reader/writer helpers
• 2b04a1f Fix KTOR-9248 JWTAuthenticationProvider silently swallows exceptions (#5877)
• 702ff9f KTOR-9889 Fix deadlock in concurrent module loading with Dependency Injection...
• 1fab5f1 Reject Accept entries with q=0 in ContentNegotiation (#5873)
• b06c3b5 KTOR-9891 Delegate SynchronizedObject to kotlinx.atomicfu on Native (#5874)
• Additional commits viewable in compare view

Sourced from io.ktor:ktor-serialization-kotlinx-json's releases.

3.6.0

Published 16 September 2026

Features

• KTOR-8596 OpenID Connect (OAuth2) auto-discover & configuration
• KTOR-9645 Client curated multi-platform facade module
• KTOR-8883 Support nested jars in static resources
• KTOR-8672 Support at least zstd and deflate formats of precompressed files
• KTOR-8595 Auth JWK Support (auto-discover)
• KTOR-9841 OIDC Server Plugin
• KTOR-9654 Override fetch in JS engine
• KTOR-9785 Typesafe Authentication DSL
• KTOR-462 Async CIO DNS resolver with timeout
• KTOR-9709 Add resource attribute for client resources plugin
• KTOR-5009 ContentNegotiation: Add a way to prevent changing Accept and Content-Type headers
• KTOR-9776 OpenAPI: Support the "const" validation keyword
• KTOR-7468 DefaultConversionService: Support Uuid type introduced in Kotlin 2.0
• KTOR-9578 HttpCache add method for clearing
• KTOR-9590 OpenAPI Contextual JSON schema inference support
• KTOR-6610 Log which ConfigLoader has been used for loading the server configuration
• KTOR-9735 Commonize HttpCache FileCacheStorage
• KTOR-8953 WebRTC client on JVM
• KTOR-9674 UDP support for Node.js targets
• KTOR-9612 Add text/markdown ...

  Description has been truncated

  ---

  Summary by cubic

  Bumps the Ktor client dependencies from 3.5.2 to 3.6.0 in the kotlin module's version catalog, covering ktor-client-core, ktor-client-cio, ktor-client-mock, ktor-client-content-negotiation, and ktor-serialization-kotlinx-json. The 3.6.0 minor release adds features like a typesafe authentication DSL and OIDC support, along with several client bugfixes.