The following configuration should work for Gradle-based projects:
buildscript {
repositories {
maven { url "http://download.crashlytics.com/maven" }
}
dependencies {
classpath "com.crashlytics.tools.gradle:crashlytics-gradle:1.+"
}
}
apply plugin: "crashlytics"
repositories {
maven { url "http://download.crashlytics.com/maven" }
}
dependencies {
compile "com.crashlytics.android:crashlytics:1.1.+"
}
Taken from https://crashlytics.com/downloads/gradle