Unresolved reference: Libraries - buildSrc

I'm trying to switch to using Kotlin DSL to get dependencies versions from an object Kotlin file instead of gradle files. When I do a gradle sync it is unable to resolve reference, but I'm able to click on file (Libraries) from build.gradle.kts . I haven't made any other changes to build.gradle or settings.gradle . The issue isn't specific to Jackson and I tried this in multiple projects and read documentation and searched for answers before posting the question.

I get a build.gradle.kts:15:20: Unresolved reference: Libraries

This is the structure of my project

build.gradle
settings.gradle
+buildSrc
    build.gradle.kts
    +src
        +main
            +kotlin
                Libraries.kt

This is the my build.gradle.kts file

import org.gradle.kotlin.dsl.`kotlin-dsl`

plugins {
    `kotlin-dsl`
    java
    `java-gradle-plugin`
}


repositories {
    mavenCentral()
}

dependencies {
    implementation(Libraries.Jackson.core)
//    implementation(Libraries.anotherJackson)
}

This is the kotlin Libraries.kt file

object Libraries {
    val Jackson = JacksonLibraries
    const val anotherJackson = "com.fasterxml.jackson.core:jackson-core:2.11.1"

}

object JacksonLibraries {
    const val core = "com.fasterxml.jackson.core:jackson-core:${Versions.Jackson.core}"
}

object Versions {
    object Jackson {
        const val core = "2.11.1"
        const val annotations = "2.11.1"
        const val databind = "2.11.1"
    }
}

If I try it without the Libraries file it works fine.

implementation("com.fasterxml.jackson.core:jackson-core:2.11.1")

But neither of these two work

implementation(Libraries.Jackson.core)
implementation(Libraries.anotherJackson)

Thanks in advance!

from Unresolved reference: Libraries - buildSrc