In my springboot application, I have used spring boot version:

<version>2.0.4.RELEASE</version>

…and also mysql connector dependency:

<dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
</dependency>

Note that no version is mentioned for this dependency, meaning it inherits version from parent pom.

I changed springboot version to 2.7.18, but I see that now maven complains about mysql dependency version missing, and I have to modify dependency as:

<dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.32</version>
            <scope>runtime</scope>
</dependency>

What’s the reason for this behaviour?