diff --git a/build.gradle b/build.gradle
index 8308384e..528e257e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -64,8 +64,10 @@ subprojects {
     apply plugin: 'signing'
     apply plugin: 'biz.aQute.bnd.builder'
 
-    sourceCompatibility = JavaVersion.VERSION_1_8
-    targetCompatibility = JavaVersion.VERSION_1_8
+    java {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
 
     repositories {
         mavenCentral()