diff --git a/build.gradle b/build.gradle
index fc987c6..29f1b1b 100755
--- a/build.gradle
+++ b/build.gradle
@@ -28,6 +28,7 @@ apply from: "${gradleHelpersLocation}/readme2html.gradle"
 
 apply plugin: 'java'
 sourceCompatibility = 1.8
+targetCompatibility = 1.8
 
 sourceSets {
     test {