Dependency upgrade

build.gradle

@@ -5,7 +5,6 @@ buildscript {
     repositories {
         google()
         jcenter()
-        maven { url 'https://maven.fabric.io/public' }
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:4.0.0'
@@ -15,7 +14,7 @@ buildscript {
         classpath 'com.google.gms:google-services:4.3.3'
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
-        classpath 'io.fabric.tools:gradle:1.31.0'
+        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.2.0'
         classpath 'com.google.firebase:perf-plugin:1.3.1'
     }
 }
@@ -25,7 +24,7 @@ allprojects {
         google()
         jcenter()
         maven { url "https://jitpack.io" }
-        maven { url 'http://guardian.github.com/maven/repo-releases' }
+        maven { url 'https://guardian.github.com/maven/repo-releases' }
     }
 }