**[Phil Webb](https://jira.spring.io/secure/ViewProfile.jspa?name=pwebb)** opened **[SPR-13963](https://jira.spring.io/browse/SPR-13963?redirect=false)** and commented Upgrading Spring Boot to Framework to 4.3is not currently possible due to failure in `EndpointAutoConfigurationTests`. It appears that this line in `EndpointAutoConfiguration`: ```java @Autowired(required = false) private Map<String, HealthIndicator> healthIndicators = new HashMap<String, HealthIndicator>(); ``` No longer works correctly as String values end up in the map. I believe that commit [3f74a74481d](https://github.com/spring-projects/spring-framework/commit/4a0fa69ce469cae2e8c8a1a45f0b43f74a74481d) is ultimately responsible as rolling this back seems to fix the issue. --- **Affects:** 4.3 RC1 **Issue Links:** - #12570 Allow for normal bean wiring semantics for types assignable to Map - #19532 Self reference fallback in 4.3 is not meant to apply to collection elements - #19684 Can't autowire BiMap: container resolves non-matching Map of value beans **Referenced from:** commits https://github.com/spring-projects/spring-framework/commit/48ee9b52d4be82241c76cc877f281e51905205fb, https://github.com/spring-projects/spring-framework/commit/1b53edfc5e17f30730f0d24ac1a019b85be1e675