Who contributed to Spring on July 4, 2026?

3 developers shipped this update, including sothawo, ilayaperumalg, and dependabot[bot].

What were the notable Spring updates?

Remove calls to deprecated MCP API, Remove explicit `protobuf-java` version properties, and Upgrade Elasticsearch to 9.4.3.

@spring-projects

Spring Framework, Spring Boot, and the JVM enterprise layer

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The Wire · Showcase

Spring AI fixes MCP API deprecation, protobuf versioning conflicts

By RepoJournal · Filed 06:04 UTC on July 4, 2026 · About Spring

3 people shipped this

dependabot[bot] @dependabot[bot] 2 cited

sothawo @sothawo 1 cited

ilayaperumalg @ilayaperumalg 1 cited

Spring AI removed deprecated MCP API calls and resolved a critical protobuf version mismatch with Spring Boot 4.x that was shadowing newer versions across vector stores.

The Spring AI team cleaned up deprecated MCP API calls [1], closing out technical debt before the next major release. In parallel, they removed explicit protobuf-java version pins from the root pom.xml [2], trusting Spring Boot 4.x's bom import at 4.35.0 instead of the older 3.25.8 and 4.29.3 pins that were causing conflicts in downstream modules. This matters because the pinned versions were overriding Spring Boot's dependency management in spring-ai-qdrant-store and spring-ai-milvus-store, potentially leaving those stores vulnerable or incompatible. Spring AI also fixed OpenSearchVectorStore deserialization [4] by handling a Jackson 2 vs Jackson 3 mismatch where the OpenSearch client couldn't deserialize into Jackson 3 annotated POJOs. On the tooling side, Google GenAI ToolChoice now properly handles VALIDATED mode [5] and defaults to AUTO when only allowed-function-names is set, preventing opaque startup failures. Spring Data Elasticsearch upgraded to 9.4.3 [3], and Spring AMQP bumped JUnit to 6.1.1 [6] and HttpClient5 to 5.6.2 [7] for dev dependencies.

Action items

→ Review and test protobuf imports in custom vector stores if you extend spring-ai-qdrant-store or spring-ai-milvus-store spring-projects/spring-ai [plan]
→ Test OpenSearchVectorStore deserialization if using OpenSearch with Spring AI spring-projects/spring-ai [plan]
→ Verify Google GenAI tool-choice configuration if relying on allowed-function-names defaults spring-projects/spring-ai [monitor]

References

[1] Remove calls to deprecated MCP API spring-projects/spring-ai
[2] Remove explicit `protobuf-java` version properties spring-projects/spring-ai
[3] Upgrade Elasticsearch to 9.4.3 ↗ spring-projects/spring-data-elasticsearch
[4] Fix `OpenSearchVectorStore` document deserialization ↗ spring-projects/spring-ai
[5] Fix Google GenAI ToolChoice VALIDATED mode and defaults spring-projects/spring-ai
[6] Bump org.junit:junit-bom from 6.1.0 to 6.1.1 ↗ spring-projects/spring-amqp
[7] Bump org.apache.httpcomponents.client5:httpclient5 from 5.6.1 to 5.6.2 in the development-dependencies group ↗ spring-projects/spring-amqp

Quick answers

What shipped in Spring on July 4, 2026?: Spring AI removed deprecated MCP API calls and resolved a critical protobuf version mismatch with Spring Boot 4.x that was shadowing newer versions across vector stores. In total, 7 commits and 4 pull requests landed.
Who contributed to Spring on July 4, 2026?: 3 developers shipped this update, including sothawo, ilayaperumalg, and dependabot[bot].
What were the notable Spring updates?: Remove calls to deprecated MCP API, Remove explicit `protobuf-java` version properties, and Upgrade Elasticsearch to 9.4.3.

SPRING FIXES STALE PROPERTY ACCESS BUG, ELASTICSEARCH CUTS JSON OVERHEAD

Spring Framework plugged a SpEL evaluation context bug that could serve stale cached properties between expression evaluations, while Spring Data Elasticsearch eliminated wasteful intermediate JSON serialization in search hit field conversion.

java 10 shipped 1-min read

@spring-projects 2 days ago

SPRING DATA ELASTICSEARCH GOES SERVERLESS, BOOT FIXES OTLP TYPE BUG

Spring Data Elasticsearch now supports serverless deployments with a new ElasticsearchServerType enum, while Spring Boot patches a stale metadata reference that broke OTLP logging transport configuration.

java 19 shipped 1-min read

@spring-projects 3 days ago

SPRING BOOT KILLS RESTTEMPLATE, SPRING AI GAINS IMAGE GEN

Spring Boot is deprecating RestTemplate across its entire ecosystem, forcing a migration to RestClient as the Framework itself moves on [ref:1].

java 20 shipped 1-min read

@spring-projects 4 days ago

SPRING BOOT DOCUMENTATION CLEANUP CONTINUES WHILE ECOSYSTEM UPGRADES LOGBACK

Spring Boot is methodically fixing its generated documentation examples as the broader ecosystem shifts to Logback 1.6.0, which removed deprecated APIs.

java 35 shipped 1-min read

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