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I have a beautiful BOM with a lot of dependencies in its dependencyManagement section and I would like to create another BOM that imports all that dependencies except one . I tried doing this:

... in my dependencyManagement section
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-dependencies</artifactId>
    <version>${spring-boot-version}</version>
    <type>pom</type>
    <scope>import</scope>
    <exclusions>
        <exclusion>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        </exclusion>
    </exclusions>
</dependency>
The POM is formally correct and everything compiles. But the exclusion is simply ignored. What am I missing? Is this approach correct?
I'm using Maven 3+.
                You may need to provide the whole pom.xml, at the least the DependencyManagement and Dependencies sections
– alexbt
                Sep 1, 2016 at 21:15
                Also, type this "mvn dependency:tree -Dverbose -Dincludes=com.google.code.gson:gson" to show us where the dependency is really comming from
– alexbt
                Sep 2, 2016 at 1:06
                Still not in Maven 3.5.2 Release as on date, this should be in the next maven version as the patch for this: issues.apache.org/jira/browse/MNG-5600 has been pulled into master
– Deepak
                Mar 1, 2018 at 9:16
                Some recent activity github.com/apache/maven/pull/295, fingers crossed it will land in Maven 3.7!
– levant pied
                Jan 3, 2020 at 22:32
                I am facing the same issue. My maven version is 3.5.2. Just wanted to check is this feature added in maven in their latest version, so that i can exclude the dependency.
– Sam
                Nov 9, 2018 at 5:17
                I misunderstood this, so for anyone reading, exclusions do work inside the dependencies declared at dependencyManagement tag, as long as they are not of the <scope>import</scope> (which only works with <type>pom</pom>)
– BugsOverflow
                Apr 24 at 6:12
Exclusions are still not implemented for dependencyManagement as of current maven 3.6.3. However you can include a project specific "Bill Of Materials" (BOM) as the first dependency in the dependencyManagement section, i.e.
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>my-group</groupId>
            <artifactId>my-group-project-bom</artifactId>
            <version>${project.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-dependencies</artifactId>
            <version>${spring-boot.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>
You can then specify all the necessary artifact versions in your project BOM which will take precedence over the spring-boot dependency versions.
        
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