Can't integrate with SpringBoot 4

[Biiddd]

with the latest flyway version 11.15.0, SpringBoot 4.X and JDK25, here is my pom

        <dependency>
            <groupId>org.flywaydb</groupId>
            <artifactId>flyway-database-postgresql</artifactId>
            <version>11.15.0</version>
            <scope>runtime</scope>
        </dependency>

The application.yaml told me there are no such configuration fields, and no log output while the application start.

2025-10-29 16:46:45.687  INFO 9988 c.r.medrec.backend.BackendApplication    : The following 1 profile is active: "dev"
2025-10-29 16:46:46.420  INFO 9988 o.s.boot.tomcat.TomcatWebServer          : Tomcat initialized with port 9478 (http)
2025-10-29 16:46:46.430  INFO 9988 o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2025-10-29 16:46:46.430  INFO 9988 o.apache.catalina.core.StandardEngine    : Starting Servlet engine: [Apache Tomcat/11.0.13]
2025-10-29 16:46:46.482  INFO 9988 b.w.c.s.WebApplicationContextInitializer : Root WebApplicationContext: initialization completed in 759 ms

[Biiddd]

it can work with manual written FlywayConfig bean

[aliktb]

I had the same issue where Flyway migrations were not being performed when upgrading to Spring Boot 4.x. I managed to find spring-projects/spring-boot#47315 which points to https://github.com/spring-projects/spring-boot/wiki/Spring-Boot-4.0-Migration-Guide#module-dependencies

I've got it working on Spring Boot 4.0.0-RC1 with Java 21 by removing flyway-core and replacing it with the Flyway starter:

<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-flyway -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-flyway</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.flywaydb/flyway-database-postgresql -->
<dependency>
    <groupId>org.flywaydb</groupId>
    <artifactId>flyway-database-postgresql</artifactId>
    <scope>runtime</scope>
</dependency>

As mentioned in that issue, the starter is opinionated, but seems to work out of the box with minimal changes to application code