v4.1.0-M2

⭐ New Features

• Add support for publishMaxGaugeForHistograms in OtlpRegistry #49242
• Add TWENTY_SIX to JavaVersion enum #49194
• Support service connections with RabbitMQ Stream and Docker Compose #49162
• Bind 'Optional' value object parameters as empty rather than null #49152
• Add Kotlin DSL extension functions for TestEntityManager #49063
• Add customizers for OtlpHttpLogRecordExporterBuilder and OtlpGrpcLogRecordExporterBuilder #49002
• Improve performance of structure logging 'ContextPairs' nested name splitting #48999
• Show certificates from truststore in SSL info endpoint #48967
• Add time, locale, and work dir data to ProcessInfo #48959
• Add compression mode OTLP property #48957
• Provide support for adding to the mime types that are compressed #48930
• Support service connections with RabbitMQ Streams and Testcontainers #42443
• Provide configuration properties and customizers for configuring Jackson's factories #34709
• Provide a configuration option to load properties config data files as UTF-8 #28663

🐞 Bug Fixes

• Jackson properties may not be applied correctly to RestClients #49250
• Using the OTel and Zipkin starters together creates invalid configuration #49215
• ClassNotFoundException when using Actuator without spring-boot-health #49198
• Whitespace can be incorrectly removed when spring-boot-configuration-processor runs on multi-line javadoc #49061
• Slice test includes fail to load when using spring-boot-starter-test-classic #49042
• Java version requirement check for native image is confusing if AOT didn't run #49025
• Jackson2HttpMessageConvertersConfiguration uses ConditionOn Jackson3 XMLMapper class #49016
• TestPropertyValues.Pair.fromMapEntry(Entry<String, String>) does not comply with its nullability contract #48991
• server.jetty.threads.max is ignored when using virtual threads #48990
• Docker credential helpers with file extensions cannot be executed on Windows #48980

📔 Documentation

• Couchbase and Kafka are incorrectly listed as supporting SSL with Docker Compose #49213
• Document that use of non idiomatic format for '@Value' still apply for environment variables #49110
• Document naming convention for custom test-scoped starters #49018
• Delay removal of Jackson 2 support until 4.3 at the earliest #49011
• LICENSE.txt and NOTICE.txt files have the wrong content in the latest releases #49004
• ApplicationContextAssert documents a non-existent assertion in getFailure() #48978
• Update the configuration metadata changelog to include properties whose default values have changed #48962
• Highlight the importance of the preStop hook when configuring Kubernetes probes #48947

🔨 Dependency Upgrades

• Upgrade to ActiveMQ 6.2.1 #49254
• Upgrade to Artemis 2.51.0 #49203
• Upgrade to AssertJ 3.27.7 #49124
• Upgrade to Byte Buddy 1.18.5 #49235
• Upgrade to Commons Codec 1.21.0 #49125
• Upgrade to Couchbase Client 3.11.1 #49252
• Upgrade to Elasticsearch Client 9.2.5 #49177
• Upgrade to Flyway 11.20.3 #49127
• Upgrade to Flyway 12.0.1 #49255
• Upgrade to Groovy 5.0.4 #49128
• Upgrade to Hibernate 7.2.4.Final #49180
• Upgrade to HttpCore5 5.4.1 #49181
• Upgrade to Jaybird 6.0.4 #49130
• Upgrade to JBoss Logging 3.6.2.Final #49131
• Upgrade to Jedis 7.2.1 #49227
• Upgrade to Jersey 4.0.2 #49132
• Upgrade to Jetty 12.1.6 #49133
• Upgrade to jOOQ 3.20.11 #49134
• Upgrade to JUnit Jupiter 6.0.3 #49236
• Upgrade to Kafka 4.2.0 #49258
• Upgrade to Kotlin 2.3.10 #49135
• Upgrade to Lettuce 7.2.1.RELEASE #49228
• Upgrade to Logback 1.5.32 #49248
• Upgrade to Maven Compiler Plugin 3.15.0 #49137
• Upgrade to Maven Dependency Plugin 3.10.0 #49172
• Upgrade to Micrometer 1.17.0-M2 #49173
• Upgrade to Micrometer Tracing 1.7.0-M3 #49174
• Upgrade to MongoDB 5.6.3 #49138
• Upgrade to MySQL 9.6.0 #49139
• Upgrade to Netty 4.2.10.Final #49140
• Upgrade to OpenTelemetry 1.58.0 #49141
• Upgrade to Oracle Database 23.26.1.0.0 #49142
• Upgrade to Postgresql 42.7.10 #49204
• Upgrade to Prometheus Client 1.5.0 #49256
• Upgrade to R2DBC MariaDB 1.4.0 #49257
• Upgrade to Rabbit Stream Client 1.5.0 #49182
• Upgrade to Reactor Bom 2025.0.3 #49113
• Upgrade to Spring AMQP 4.1.0-M2 #49114
• Upgrade to Spring Data 2026.0.0-M1 #49229
• Upgrade to Spring Framework 7.0.5 #49218
• Upgrade to Spring Integration 7.1.0-M2 #49117
• Upgrade to Spring Kafka 4.1.0-M1 #49118
• Upgrade to Spring LDAP 4.1.0-M1 #49119
• Upgrade to Spring Pulsar 2.0.3 #49120
• Upgrade to Spring Security 7.1.0-M2 #49121
• Upgrade to Spring Session 4.1.0-M1 #49145
• Upgrade to SQLite JDBC 3.51.2.0 #49175
• Upgrade to Tomcat 11.0.18 #49143

❤️ Contributors

Thank you to all the contributors who worked on this release:

@GaetanoCerciello, @aalsanie, @dj258255, @dsyer, @eddumelendez, @garvit-joshi, @jdsalasca, @joaquinjsb, @jonatan-ivanov, @junpakPark, @linkian209, @nosan, @osvetlik, @quaff, @scordio, @shakuzen, and @srt

v4.0.3

⭐ New Features

• Add TWENTY_SIX to JavaVersion enum #49193

🐞 Bug Fixes

• Jackson properties may not be applied correctly to RestClients #49223
• ClassNotFoundException when using Actuator without spring-boot-health #49196
• Using the OTel and Zipkin starters together creates invalid configuration #49183
• Whitespace can be incorrectly removed when spring-boot-configuration-processor runs on multi-line javadoc #49060
• Jackson2HttpMessageConvertersConfiguration uses ConditionOn Jackson3 XMLMapper class #49015
• server.jetty.threads.max is ignored when using virtual threads #48989
• Slice test includes fail to load when using spring-boot-starter-test-classic #48981
• Docker credential helpers with file extensions cannot be executed on Windows #48979
• Java version requirement check for native image is confusing if AOT didn't run #48963
• TestPropertyValues.Pair.fromMapEntry(Entry<String, String>) does not comply with its nullability contract #48948

📔 Documentation

• Couchbase and Kafka are incorrectly listed as supporting SSL with Docker Compose #49212
• Document that use of non idiomatic format for '@Value' still apply for environment variables #49109
• Document naming convention for custom test-scoped starters #49017
• Delay removal of Jackson 2 support until 4.3 at the earliest #49010
• LICENSE.txt and NOTICE.txt files have the wrong content in the latest releases #49003
• ApplicationContextAssert documents a non-existent assertion in getFailure() #48977
• Highlight the importance of the preStop hook when configuring Kubernetes probes #48946

🔨 Dependency Upgrades

• Upgrade to AssertJ 3.27.7 #49095
• Upgrade to Elasticsearch Client 9.2.5 #49184
• Upgrade to Groovy 5.0.4 #49097
• Upgrade to Hibernate 7.2.3.Final #49098
• Upgrade to Hibernate 7.2.4.Final #49167
• Upgrade to Jaybird 6.0.4 #49099
• Upgrade to JBoss Logging 3.6.2.Final #49100
• Upgrade to Jersey 4.0.2 #49101
• Upgrade to Jetty 12.1.6 #49102
• Upgrade to jOOQ 3.19.30 #49103
• Upgrade to JUnit Jupiter 6.0.3 #49233
• Upgrade to Logback 1.5.29 #49169
• Upgrade to Logback 1.5.32 #49245
• Upgrade to Micrometer 1.16.3 #49111
• Upgrade to Micrometer Tracing 1.6.3 #49112
• Upgrade to MongoDB 5.6.3 #49105
• Upgrade to MySQL 9.6.0 #49106
• Upgrade to Netty 4.2.10.Final #49107
• Upgrade to Postgresql 42.7.10 #49202
• Upgrade to Reactor Bom 2025.0.3 #49087
• Upgrade to Spring Data Bom 2025.1.3 #49088
• Upgrade to Spring Framework 7.0.5 #49216
• Upgrade to Spring Integration 7.0.3 #49217
• Upgrade to Spring Kafka 4.0.3 #49090
• Upgrade to Spring LDAP 4.0.2 #49091
• Upgrade to Spring Pulsar 2.0.3 #49092
• Upgrade to Spring Security 7.0.3 #49093
• Upgrade to Spring Session 4.0.2 #49094
• Upgrade to Tomcat 11.0.18 #49108

❤️ Contributors

Thank you to all the contributors who worked on this release:

@GaetanoCerciello, @dsyer, @linkian209, @nosan, @quaff, @scordio, and @srt

v3.5.11

🐞 Bug Fixes

• Whitespace can be incorrectly removed when spring-boot-configuration-processor runs on multi-line javadoc #49039
• server.jetty.threads.max is ignored when using virtual threads #48982
• Docker credential helpers with file extensions cannot be executed on Windows #48965

📔 Documentation

• Couchbase and Kafka are incorrectly listed as supporting SSL with Docker Compose #49211
• Document that use of non idiomatic format for '@Value' still apply for environment variables #49054
• Document naming convention for custom test-scoped starters #49014
• LICENSE.txt and NOTICE.txt files have the wrong content in the latest releases #48996
• ApplicationContextAssert documents a non-existent assertion in getFailure() #48973
• Highlight the importance of the preStop hook when configuring Kubernetes probes #48936

🔨 Dependency Upgrades

• Upgrade to AssertJ 3.27.7 #49075
• Upgrade to Groovy 4.0.30 #49076
• Upgrade to Hibernate 6.6.42.Final #49077
• Upgrade to Jaybird 6.0.4 #49078
• Upgrade to JBoss Logging 3.6.2.Final #49079
• Upgrade to Jetty 12.0.32 #49080
• Upgrade to jOOQ 3.19.30 #49081
• Upgrade to Logback 1.5.32 #49243
• Upgrade to Micrometer 1.15.9 #49064
• Upgrade to Micrometer Tracing 1.5.9 #49065
• Upgrade to MySQL 9.6.0 #49083
• Upgrade to Netty 4.1.131.Final #49165
• Upgrade to Postgresql 42.7.10 #49201
• Upgrade to Reactor Bom 2024.0.15 #49066
• Upgrade to Spring Authorization Server 1.5.6 #49067
• Upgrade to Spring Data Bom 2025.0.9 #49068
• Upgrade to Spring Framework 6.2.16 #49069
• Upgrade to Spring GraphQL 1.4.5 #49070
• Upgrade to Spring Integration 6.5.7 #49071
• Upgrade to Spring Kafka 3.3.13 #49244
• Upgrade to Spring LDAP 3.3.6 #49072
• Upgrade to Spring Pulsar 1.2.15 #49073
• Upgrade to Spring Security 6.5.8 #49225
• Upgrade to Spring Session 3.5.5 #49074
• Upgrade to Tomcat 10.1.52 #49084
• Upgrade to Undertow 2.3.23.Final #49166

❤️ Contributors

Thank you to all the contributors who worked on this release:

@dsyer, @linkian209, @nosan, @quaff, @scordio, and @srt

v4.1.0-M1

⚠️ Noteworthy Changes

• The dependency on org.eclipse.jetty.ee11:jetty-ee11-servlets has been removed from spring-boot-jetty as it was unnecessary and unused. If your application code depends on a class from jetty-ee11-servlets, declare a dependency on it in your build configuration #48689

⭐ New Features

• Automatically configure Spring AMQP's observation convention beans #48922
• Automatically configure Spring Kafka's observation convention beans #48914
• Add spring.data.rest.return-body-on-delete configuration property #48872
• Provide configuration properties for Jackson read and write features that are common to multiple formats #48870
• Allow beans created in MockRestServiceServerAutoConfiguration to be replaced by user-provided alternatives #48825
• Introduce @AutoConfigureWebServer test annotation to support @SpringBootTest with specific classes and a random port #48815
• Support configuring bootBuildImage's environment through the command line #48792
• Upgrade to jOOQ 3.20 and require Java 21 to use it #48619
• WebServiceTemplateBuilder should prevent the default MessageFactory to be created #48615
• Remove support for the deprecated layertools jar mode #48568
• Deprecate Derby support since Apache Derby is retired #48567
• Reinstate support for Spock now that it supports Groovy 5 #48513
• Remove support for deprecated Logback properties #48489
• Use Charset instead of String for Mustache template encoding #48347
• Support SSL (LDAPS) with embedded LDAP server #48315
• Add property to automatically register a ContextPropagatingTaskDecorator bean #48033
• Autoconfigure JVM and system metrics with available conventions #47935
• Allow EntityManagerFactoryBuilder to also add PersistenceUnitPostProcessor instances #47802
• Perform failure analysis when Testcontainers cannot find a valid Docker environment #47797
• Add support for configuring SimpleMessageListenerContainer #47716
• Decorate all Assert implementations with @CheckReturnValue #46766
• Delete web servers' temporary directories when the context is closed #9983

🐞 Bug Fixes

• No TransactionAutoConfiguration with spring-boot-starter-kafka for Spring Boot 4 #48898
• SessionAutoConfiguration creates a DefaultCookieSerializer with a default SameSite of null instead of Lax #48861
• Message interpolation by MVC and WebFlux's Validators does not work correctly in a native image #48844
• RestTestClientAutoConfiguration and TestRestTemplateAutoConfiguration should be package-private #48843
• Setting graphql schema location to "classpath*:graphql/**/" causes failure due to incorrectly packaged test resource #48842
• Evaluation of bean conditions unnecessarily queries the bean factory for types that are not present #48841
• When a bean condition references a type that is not present, it appears as ? in the condition evaluation report #48839
• CloudFoundry integration fails in Servlet-based web app without a dependency on spring-boot-starter-restclient #48827
• SSL metrics are no longer auto-configured #48824
• Actuator /info endpoint fails in Java 25 Native Image (VirtualThreadSchedulerMXBean support) #48813
• DataSourceBuilder cannot create oracle.ucp.jdbc.PoolDataSourceImpl in a native image #48704
• HttpServiceClientProperties incorrectly uses the @ConfigurationProperties annotation on a LinkedHashMap class #48696
• The spring-boot-cloudfoundry module should only have an optional dependency on spring-boot-security #48687
• Application JAR created by extract command is not reproductible #48679
• @SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT) is no longer applied to the management server #48654
• Fix zero-length byte buffer in InspectedContent #48651
• Micrometer test modules should have an api dependency on micrometer-observation-test #48626
• spring-boot-micrometer-tracing-opentelemetry fails if spring-boot-opentelemetry isn't there #48586
• App fails to start with starter-webmvc and starter-zipkin #48584
• AOT processing of tests should not be disabled when 'skipTests' is set #46929
• Hard-coded uses of src/main/webapp preclude any other project layouts from working #23829

📔 Documentation

• Fix typo in REST client documentation #48919
• Remove duplicate word #48877
• Document support for configuring arguments passed to Docker Compose #48807
• The documentation related to EnvironmentPostProcessor links to deprecated interface #48805
• Document spring-boot-starter-cloudfoundry on Cloud Foundry Support Page #48797
• Correct docs to use new location for error handling configuration properties #48771
• Update documentation for Buildpack's AOT Cache support #48770
• Clarify javadoc to make it clear that HazelcastConfigCustomizer beans are only applied if Hazelcast is configured via a config file #48660
• Example using excludeDevtools property should document that optional dependencies should be enabled #48644
• Fix grammar and typos in the reference guide #48602
• Update Tracing section for Spring Boot 4's modularity #48582

🔨 Dependency Upgrades

• Upgrade to ActiveMQ 6.2.0 #48732
• Upgrade to Artemis 2.44.0 #48733
• Upgrade to Byte Buddy 1.18.4 #48891
• Upgrade to Classmate 1.7.3 #48849
• Upgrade to Commons Codec 1.20.0 #48735
• Upgrade to Commons DBCP2 2.14.0 #48736
• Upgrade to Commons Lang3 3.20.0 #48737
• Upgrade to Commons Pool2 2.13.1 #48738
• Upgrade to Elasticsearch Client 9.2.3 #48731
• Upgrade to Flyway 11.20.2 #48850
• Upgrade to Hibernate 7.2.1.Final #48845
• Upgrade to Hibernate Validator 9.1.0.Final #48741
• Upgrade to HtmlUnit 4.21.0 #48742
• Upgrade to HttpClient5 ...

v4.0.2

⚠️ Noteworthy Changes

• The dependency on org.eclipse.jetty.ee11:jetty-ee11-servlets has been removed from spring-boot-jetty as it was unnecessary and unused. If your application code depends on a class from jetty-ee11-servlets, declare a dependency on it in your build configuration. #48677

🐞 Bug Fixes

• No TransactionAutoConfiguration with spring-boot-starter-kafka for Spring Boot 4 #48880
• Evaluation of bean conditions unnecessarily queries the bean factory for types that are not present #48840
• When a bean condition references a type that is not present, it appears as ? in the condition evaluation report #48838
• SessionAutoConfiguration creates a DefaultCookieSerializer with a default SameSite of null instead of Lax #48830
• Setting graphql schema location to "classpath*:graphql/**/" causes failure due to incorrectly packaged test resource #48829
• Message interpolation by MVC and WebFlux's Validators does not work correctly in a native image #48828
• CloudFoundry integration fails in Servlet-based web app without a dependency on spring-boot-starter-restclient #48826
• RestTestClientAutoConfiguration and TestRestTemplateAutoConfiguration should be package-private #48820
• SSL metrics are no longer auto-configured #48819
• Actuator /info endpoint fails in Java 25 Native Image (VirtualThreadSchedulerMXBean support) #48812
• DataSourceBuilder cannot create oracle.ucp.jdbc.PoolDataSourceImpl in a native image #48703
• The spring-boot-cloudfoundry module should only have an optional dependency on spring-boot-security #48685
• Application JAR created by extract command is not reproductible #48678
• AOT processing of tests should not be disabled when 'skipTests' is set #48662
• @SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT) is no longer applied to the management server #48653
• Fix zero-length byte buffer in InspectedContent #48650
• Can no longer override JacksonJsonHttpMessageConverter with ServerHttpMessageConvertersCustomizer #48635
• HttpServiceClientProperties incorrectly uses the @ConfigurationProperties annotation on a LinkedHashMap class #48616
• spring-boot-micrometer-tracing-opentelemetry fails if spring-boot-opentelemetry isn't there #48585
• App fails to start with starter-webmvc and starter-zipkin #48581
• Micrometer test modules should have an api dependency on micrometer-observation-test #48386

📔 Documentation

• Fix typo in REST client documentation #48907
• Remove duplicate word #48874
• Document support for configuring arguments passed to Docker Compose #48806
• The documentation related to EnvironmentPostProcessor links to deprecated interface #48803
• Update documentation for Buildpack's AOT Cache support #48769
• Correct docs to use new location for error handling configuration properties #48767
• Document spring-boot-starter-cloudfoundry on Cloud Foundry Support Page #48675
• Clarify javadoc to make it clear that HazelcastConfigCustomizer beans are only applied if Hazelcast is configured via a config file #48659
• Example using excludeDevtools property should document that optional dependencies should be enabled #48641
• Fix grammar and typos in the reference guide #48601
• Update Tracing section for Spring Boot 4's modularity #48576

🔨 Dependency Upgrades

• Upgrade to Classmate 1.7.3 #48783
• Upgrade to Elasticsearch Client 9.2.3 #48721
• Upgrade to Hibernate 7.2.1.Final #48857
• Upgrade to HttpClient5 5.5.2 #48784
• Upgrade to Jackson 2 Bom 2.20.2 #48910
• Upgrade to Jackson Bom 3.0.4 #48931
• Upgrade to JUnit Jupiter 6.0.2 #48785
• Upgrade to Lettuce 6.8.2.RELEASE #48859
• Upgrade to Logback 1.5.24 #48786
• Upgrade to Logback 1.5.25 #48885
• Upgrade to Micrometer 1.16.2 #48712
• Upgrade to Micrometer Tracing 1.6.2 #48713
• Upgrade to Native Build Tools Plugin 0.11.4 #48911
• Upgrade to Pooled JMS 3.1.9 #48787
• Upgrade to Postgresql 42.7.9 #48886
• Upgrade to R2DBC MSSQL 1.0.4.RELEASE #48858
• Upgrade to Reactor Bom 2025.0.2 #48714
• Upgrade to Spring AMQP 4.0.2 #48832
• Upgrade to Spring Batch 6.0.2 #48715
• Upgrade to Spring Data Bom 2025.1.2 #48716
• Upgrade to Spring Framework 7.0.3 #48717
• Upgrade to Spring GraphQL 2.0.2 #48718
• Upgrade to Spring HATEOAS 3.0.2 #48834
• Upgrade to Spring Integration 7.0.2 #48833
• Upgrade to Spring Kafka 4.0.2 #48719
• Upgrade to Spring Pulsar 2.0.2 #48720
• Upgrade to WebJars Locator Lite 1.1.3 #48788
• Upgrade to XML Maven Plugin 1.2.1 #48887

❤️ Contributors

Thank you to all the contributors who worked on this release:

@GaoSSR, @ShaunHaldane, @Zuohuang-Cai, @izeye, @mspiess, @ngocnhan-tran1996, and @philipbolting

v3.5.10

🐞 Bug Fixes

• Evaluation of bean conditions unnecessarily queries the bean factory for types that are not present #48836
• When a bean condition references a type that is not present, it appears as ? in the condition evaluation report #48835
• Actuator /info endpoint fails in Java 25 Native Image (VirtualThreadSchedulerMXBean support) #48810
• DataSourceBuilder cannot create oracle.ucp.jdbc.PoolDataSourceImpl in a native image #48702
• Application JAR created by extract command is not reproductible #48664
• AOT processing of tests should not be disabled when 'skipTests' is set #48661
• Fix zero-length byte buffer in InspectedContent #48649

📔 Documentation

• Update documentation for Buildpack's AOT Cache support #48768
• Document support for configuring arguments passed to Docker Compose #48657
• Clarify javadoc to make it clear that HazelcastConfigCustomizer beans are only applied if Hazelcast is configured via a config file #48634
• Fix grammar and typos in the reference guide #48596

🔨 Dependency Upgrades

• Upgrade to Classmate 1.7.3 #48775
• Upgrade to Hibernate 6.6.41.Final #48881
• Upgrade to HttpClient5 5.5.2 #48777
• Upgrade to Logback 1.5.25 #48882
• Upgrade to Micrometer 1.15.8 #48705
• Upgrade to Micrometer Tracing 1.5.8 #48706
• Upgrade to Pooled JMS 3.1.9 #48779
• Upgrade to Postgresql 42.7.9 #48883
• Upgrade to R2DBC MSSQL 1.0.4.RELEASE #48847
• Upgrade to Reactor Bom 2024.0.14 #48707
• Upgrade to REST Assured 5.5.7 #48884
• Upgrade to Spring AMQP 3.2.9 #48909
• Upgrade to Spring Data Bom 2025.0.8 #48708
• Upgrade to Spring Integration 6.5.6 #48921
• Upgrade to Spring Kafka 3.3.12 #48709
• Upgrade to Spring Pulsar 1.2.14 #48710
• Upgrade to Undertow 2.3.22.Final #48848
• Upgrade to WebJars Locator Lite 1.1.3 #48780

❤️ Contributors

Thank you to all the contributors who worked on this release:

@GaoSSR, @izeye, and @ngocnhan-tran1996

v4.0.1

⚠️ Noteworthy Changes

• Hibernate has been upgraded to 7.2.0.Final in response to Hibernate 7.1 moving to limited support
• spring-boot-starter-kotlin-serialization has been renamed to to spring-boot-starter-kotlinx-serialization-json and spring-boot-starter-kotlin-serialization-test has been renamed to spring-boot-starter-kotlinx-serialization-json-test. This change aligns the starters' names with those of their respective modules
• Using TestRestTemplate now requires a dependency on spring-boot-restclient

🐞 Bug Fixes

• JsonMixinModuleEntriesBeanRegistrationAotProcessor does not handle deprecated code #48564
• JdbcSessionAutoConfiguration may not match when using the auto-configured DataSource #48552
• @ServiceConnection for LgtmStackContainer fails when logging endpoint is configured due to multiple OtlpLoggingConnectionDetails beans #48536
• WebApplicationType does not consider modules when deduced from classpath #48517
• Spring Session auto-configuration fails in a war deployment as ServerProperties is not available #48493
• Opentelemetry logging export requires actuator module #48488
• RabbitHealthIndicator reports an error when version is missing from the connection's server properties #48487
• Actuator Info class has inconsistent nullability annotations and cannot be built with null value #48480
• Profiles retained during AOT processing are not configured in a native image #48476
• Security matchers and WebServerNamespace resolution can fail with NoClassDefFoundError when used in a traditional WAR deployment #48388
• HealthEndpointGroupMembershipValidator does not consider reactive health indicators causing NoSuchHealthContributorException to be thrown #48387
• spring.jackson.default-property-inclusion is not applied to content inclusion #48343
• TestRestTemplate.getRootUri() returns empty string #48330
• Redis health check reports an error when redis_version is missing from the INFO response #48328
• Parent's MeterRegistry beans are closed when child context closes #48325
• HttpMessageConverters picks up converter beans for both client and server #48310
• Conditions to auto-configure a RestClient are outdated with the modularization #48308
• A custom JwtTypeValidator that replaces the default can no longer be configured #48301
• PropertiesRestClientHttpServiceGroupConfigurer has highest precedence, preventing other configurers from being ordered ahead of it #48296
• SpringBootTest.UseMainMethod.WHEN_AVAILABLE and ALWAYS are incompatible with package-private or parameter-less main method #48275
• Conditions to auto-configure RestClient-based HTTP service clients are outdated with the modularization #48274
• Starter for Kotlinx Serialization Json is misnamed #48262
• ApplicationServletEnvironment is no longer configured in war deployments #48254
• RestClient.Builder bean present in @SpringBootTest due to spring-boot-starter-webmvc-test, but missing at runtime without restclient starter #48253
• ProblemDetail is rendered to XML incorrectly #48222

📔 Documentation

• Harmonize Kotlin example for HTTP Service client support #48577
• Document HttpMessageConverters detection changes in 4.0.1 #48574
• Improve javadoc for when to use class names rather than class references #48569
• Documentation has an outdated reference to the Jackson Kotlin Module #48534
• Caching documentation should clarify how to use a no-op implementation to run a test suite #48532
• Document that the default rolling policy for Log4j2 requires logging.file.path to be set #48527
• Review documentation and migration guide about changes in @AutoConfigureCache #48522
• License header in build samples is displayed in the reference documentation #48478
• Configuring Two DataSources How-To code sample is inconsistent #48449
• Fix links to source files on GitHub #48398
• Documentation contains broken links to GitHub source files #48394
• Document that org.aspectj.weaver.Advice must be on the classpath to enable support for Micrometer's annotations #48360
• Correct the annotation in the Kotlin @ConfigurationPropertiesSource example #48357
• Polish TestRestTemplate examples in the reference guide #48336
• Documentation missing for LocalTestWebServer #48333
• Update "Creating Your Own Starter" following modularisation #48317
• Fix links to javadoc in the reference documentation #48300
• Update references for RestTemplateCustomizer and RestTemplateBuilder classes in documentation #48295
• Remove modules section of the README following modularisation #48291
• Wrong number in Graceful Shutdown chapter #48284
• Mention new spring-boot-h2console module when describing how to use H2 Console #48278
• Clarify that @EnableBatchProcessing turns off all batch auto-configuration, including schema initialization #48266
• Documented replacements for spring.jackson.generator and spring.jackson.parser are inverted #48255
• Document the need for a JdbcDialect bean when using Spring Data JDBC and AOT #48240
• Update reference documentation as Spring Batch's resourceless infrastructure means that it no longer always requires a DataSource #48233
• Kotlin auto-configuration examples are not annotated with @AutoConfiguration #48228
• Revise "Use Liquibase for test-only migrations" section in reference manual #48219
• Infinispan Cache Documentation is outdated #48218
• Removed max-attempts properties metadata don't have replacement #48206
• Polish documentation on testing web applications and the various testing clients that are available #47948

🔨 Dependency Upgrades

• Upgrade to AspectJ 1.9.25.1 #48561
• Upgrade to Elasticsearch Client 9.2.2 #48447
• Upgrade to Groovy 5.0.3 #48460
• Upgrade to Hibernate 7.2.0.Final #48518
• Upgrade to Jackson Bom 3.0.3 #48462
• Upgrade to Jetty 12.1.5 #48463
• Upgrade to jOOQ 3.19.29 #48464
• Upgrade to Json Path 2...

v3.5.9

🐞 Bug Fixes

• RabbitHealthIndicator reports an error when version is missing from the connection's server properties #48486
• Profiles retained during AOT processing are not configured in a native image #48475
• NullPointerException in UndertowWebServer.destroy() when using @DirtiesContext and Citrus Spring Boot Simulator #48450
• Redis health check reports an error when redis_version is missing from the INFO response #48326
• Parent's MeterRegistry beans are closed when child context closes #48324
• SpringBootTest.UseMainMethod.WHEN_AVAILABLE and ALWAYS are incompatible with package-private or parameter-less main method #48271

📔 Documentation

• Documentation has an outdated reference to the Jackson Kotlin Module #48533
• Caching documentation should clarify how to use a no-op implementation to run a test suite #48531
• Document that the default rolling policy for Log4j2 requires logging.file.path to be set #48526
• License header in build samples is displayed in the reference documentation #48477
• Configuring Two DataSources How-To code sample is inconsistent #48448
• Improve javadoc for when to use class names rather than class references #48395
• Document that org.aspectj.weaver.Advice must be on the classpath to enable support for Micrometer's annotations #48359
• Polish TestRestTemplate examples in the reference guide #48335
• Fix links to javadoc in the reference documentation #48299
• Clarify that @EnableBatchProcessing turns off all batch auto-configuration, including schema initialization #48265
• Kotlin auto-configuration examples are not annotated with @AutoConfiguration #48227
• Infinispan Cache Documentation is outdated #48217
• Revise "Use Liquibase for test-only migrations" section in reference manual #48169

🔨 Dependency Upgrades

• Prevent upgrade to Netty 4.1.129.Final #48508
• Upgrade to AspectJ 1.9.25.1 #48557
• Upgrade to Hibernate 6.6.39.Final #48540
• Upgrade to Jetty 12.0.31 #48455
• Upgrade to jOOQ 3.19.29 #48456
• Upgrade to Logback 1.5.22 #48507
• Upgrade to MariaDB 3.5.7 #48558
• Upgrade to Micrometer 1.15.7 #48423
• Upgrade to Micrometer Tracing 1.5.7 #48424
• Upgrade to Netty 4.1.130.Final #48541
• Upgrade to Pooled JMS 3.1.8 #48559
• Upgrade to Pulsar 4.0.8 #48457
• Upgrade to Quartz 2.5.2 #48458
• Upgrade to Reactor Bom 2024.0.13 #48425
• Upgrade to Spring Authorization Server 1.5.5 #48426
• Upgrade to Spring Data Bom 2025.0.7 #48427
• Upgrade to Spring Framework 6.2.15 #48428
• Upgrade to Spring GraphQL 1.4.4 #48429
• Upgrade to Spring Integration 6.5.5 #48560
• Upgrade to Spring LDAP 3.3.5 #48430
• Upgrade to Spring Pulsar 1.2.13 #48431
• Upgrade to Spring Session 3.5.4 #48432
• Upgrade to Testcontainers 1.21.4 #48542
• Upgrade to UnboundID LDAPSDK 7.0.4 #48459

❤️ Contributors

Thank you to all the contributors who worked on this release:

@banseok1216, @berry120, @dmitrysulman, @geopark021, @noojung, @scottfrederick, @vpavic, and @youngledo

v3.4.13

🐞 Bug Fixes

• RabbitHealthIndicator reports an error when version is missing from the connection's server properties #48484
• NullPointerException in UndertowWebServer.destroy() when using @DirtiesContext and Citrus Spring Boot Simulator #48446
• Profiles retained during AOT processing are not configured in a native image #48408
• Redis health check reports an error when redis_version is missing from the INFO response #48320
• Parent's MeterRegistry beans are closed when child context closes #48319

📔 Documentation

• Caching documentation should clarify how to use a no-op implementation to run a test suite #48529
• Documentation has an outdated reference to the Jackson Kotlin Module #48525
• Document that the default rolling policy for Log4j2 requires logging.file.path to be set #48524
• License header in build samples is displayed in the reference documentation #48474
• Configuring Two DataSources How-To code sample is inconsistent #48407
• Document that org.aspectj.weaver.Advice must be on the classpath to enable support for Micrometer's annotations #48358
• Polish TestRestTemplate examples in the reference guide #48334
• Fix links to javadoc in the reference documentation #48298
• Clarify that @EnableBatchProcessing turns off all batch auto-configuration, including schema initialization #48264
• Kotlin auto-configuration examples are not annotated with @AutoConfiguration #48220
• Infinispan Cache Documentation is outdated #48191

🔨 Dependency Upgrades

• Prevent upgrade to Netty 4.1.129.Final #48505
• Upgrade to AspectJ 1.9.25.1 #48554
• Upgrade to Hibernate 6.6.39.Final #48538
• Upgrade to Jetty 12.0.31 #48452
• Upgrade to jOOQ 3.19.29 #48453
• Upgrade to Logback 1.5.22 #48504
• Upgrade to Micrometer 1.14.14 #48412
• Upgrade to Micrometer Tracing 1.4.13 #48413
• Upgrade to Netty 4.1.130.Final #48539
• Upgrade to Pooled JMS 3.1.8 #48555
• Upgrade to Reactor Bom 2024.0.13 #48414
• Upgrade to Spring Authorization Server 1.4.8 #48415
• Upgrade to Spring Data Bom 2024.1.13 #48416
• Upgrade to Spring Framework 6.2.15 #48417
• Upgrade to Spring GraphQL 1.3.7 #48418
• Upgrade to Spring Integration 6.4.10 #48556
• Upgrade to Spring LDAP 3.2.16 #48419
• Upgrade to Spring Pulsar 1.2.13 #48420
• Upgrade to Spring Session 3.4.7 #48421
• Upgrade to Spring WS 4.0.17 #48422
• Upgrade to Tomcat 10.1.50 #48506

❤️ Contributors

Thank you to all the contributors who worked on this release:

@berry120, @dmitrysulman, @geopark021, @noojung, and @youngledo

v4.0.0

Full release notes for Spring Boot 4.0 are available on the wiki. There is also a migration guide to help you upgrade from Spring Boot 3.5.

⭐ New Features

• Change tomcat and jetty runtime modules to starters #48175
• Rename spring-boot-kotlin-serialization to align with the name of the Kotlinx module that it pulls in #48076

🐞 Bug Fixes

• Error properties are a general web concern and should not be located beneath server.* #48201
• With both Jackson 2 and 3 on the classpath, @JsonTest fails due to duplicate jacksonTesterFactoryBean #48198
• Gradle war task does not exclude starter POMs from lib-provided #48197
• spring.test.webclient.mockrestserviceserver.enabled is not aligned with its module's name #48193
• SslMeterBinder doesn't register metrics for dynamically added bundles if no bundles exist at bind time #48182
• Properties bound in the child management context ignore the parent's environment prefix #48177
• ssl.chain.expiry metrics doesn't update for dynamically registered SSL bundles #48171
• Starter for spring-boot-micrometer-metrics is missing #48161
• Elasticsearch client's sniffer functionality should not be enabled by default #48155
• spring-boot-starter-elasticsearch should depend on elasticsearch-java #48141
• Auto-configuration exclusions are checked using a different class loader to the one that loads auto-configuration classes #48132
• New arm64 macbooks fail to bootBuildImage due to incorrect platform image #48128
• Properties for configuring an isolated JsonMapper or ObjectMapper are incorrectly named #48116
• Buildpack fails with recent Docker installs due to hardcoded version in URL #48103
• Image building may fail when specifying a platform if an image has already been built with a different platform #48099
• Default values of Kotlinx Serialization JSON configuration properties are not documented #48097
• Custom XML converters should override defaults in HttpMessageConverters #48096
• Kotlin serialization is used too aggressively when other JSON libraries are available #48070
• PortInUseException incorrectly thrown on failure to bind port due to Netty IP misconfiguration #48059
• Auto-configured JCacheMetrics cannot be customized #48057
• WebSecurityCustomizer beans are excluded by WebMvcTest #48055
• Deprecated EnvironmentPostProcessor does not resolve arguments #48047
• RetryPolicySettings should refer to maxRetries, not maxAttempts #48023
• Devtools Restarter does not work with a parameterless main method #47996
• Dependency management for Kafka should not manage Scala 2.12 libraries #47991
• spring-boot-mail should depend on jakarta.mail:jakarta.mail-api and org.eclipse.angus:angus-mail instead of org.eclipse.angus:jakarta.mail #47983
• spring-boot-starter-data-mongodb-reactive has dependency on reactor-test #47982
• Support for ReactiveElasticsearchClient is in the wrong module #47848

📔 Documentation

• Removed property spring.test.webclient.register-rest-template is still documented #48199
• Mention support for detecting AWS ECS in "Deploying to the Cloud" #48170
• Revise AWS section of "Deploying to the Cloud" in reference manual #48163
• Fix typo in PortInUseException Javadoc #48134
• Correct section about required setters in "Type-safe Configuration Properties" #48131
• Use since attribute in configuration properties deprecation consistently #48122
• Document EndpointJsonMapper and management.endpoints.jackson.isolated-json-mapper #48115
• Document support for configuring servlet context init parameters using properties #48112
• Some configuration properties are not documented in the appendix #48095
• Clarify how warnings about soon-to-expire SSL certificates are reported #48063
• Document how to use ContextPropagatingTaskDecorator for propagating trace context over thread boundaries #48053
• Document the level of support for the OpenTelemetry APIs #47960
• Document that you need to build with Java 25 for buildpack build-image Graal support #45501

🔨 Dependency Upgrades

• Upgrade to Cassandra Driver 4.19.2 #48184
• Upgrade to DB2 JDBC 12.1.3.0 #48087
• Upgrade to Elasticsearch Client 9.2.1 #48137
• Upgrade to GraphQL Java 25.0 #48034
• Upgrade to Hibernate 7.1.8.Final #48150
• Upgrade to Jackson Bom 3.0.2 #48089
• Upgrade to Jetty 12.1.4 #48120
• Upgrade to Jetty Reactive HTTPClient 4.1.4 #48151
• Upgrade to jOOQ 3.19.28 #48090
• Upgrade to Kafka 4.1.1 #48185
• Upgrade to Logback 1.5.21 #48091
• Upgrade to Micrometer 1.16.0 #47820
• Upgrade to Micrometer Tracing 1.6.0 #47821
• Upgrade to MySQL 9.5.0 #48092
• Upgrade to Native Build Tools Plugin 0.11.3 #48051
• Upgrade to Neo4j Java Driver 6.0.2 #47997
• Upgrade to Prometheus Client 1.4.3 #48093
• Upgrade to Reactor Bom 2025.0.0 #47822
• Upgrade to Spring AMQP 4.0.0 #47823
• Upgrade to Spring Batch 6.0.0 #47834
• Upgrade to Spring Data Bom 2025.1.0 #47824
• Upgrade to Spring Framework 7.0.1 #48168
• Upgrade to Spring GraphQL 2.0.0 #47826
• Upgrade to Spring HATEOAS 3.0.0 #47827
• Upgrade to Spring Integration 7.0.0 #47828
• Upgrade to Spring Kafka 4.0.0 #47829
• Upgrade to Spring LDAP 4.0.0 #47999
• Upgrade to Spring Pulsar 2.0.0 #47830
• Upgrade to Spring RESTDocs 4.0.0 [#47831](https://github.com/spring-projects/spring...