Spring Boot: Boot Run cannot add addResources = true

In Kotlin, on Intellij using gradle to run the task bootRun for Spring Boot, I get the error that follows:

 BUILD FAILED

 Total time: 0.085 secs
 Could not set unknown property 'addResources' for task ':bootRun' 
 of type org.springframework.boot.gradle.tasks.run.BootRun.

I am using kotlinVersion = '1.1.4-3', springBootVersion = '2.0.0.M3' and my bootrun task looks like the following in my gradle.build

bootRun
    {
         addResources = true
    }

My bootRun works as expected without the adjustments to the bootRun task