diff --git a/build.gradle b/build.gradle
index deb7f87..2fc39de 100644
--- a/build.gradle
+++ b/build.gradle
@@ -33,13 +33,13 @@ ext {
 }
 
 version = artifactVersionString
-
-sourceCompatibility = 1.8
-targetCompatibility = 1.8
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
 
 repositories {
     mavenCentral() // for jacoco and kt3k.coveralls plugins
-    jcenter() // for mockito
 }
 
 configurations {