diff --git a/build.gradle b/build.gradle
index 61f231c..06331ee 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,8 +7,8 @@ plugins {
 description = 'Navigation-mesh Toolset for jMonkeyEngine3'
 
 // select one source-code (JDK) option
-sourceCompatibility = JavaVersion.VERSION_1_8
-targetCompatibility = JavaVersion.VERSION_1_8
+sourceCompatibility = JavaVersion.VERSION_11
+targetCompatibility = JavaVersion.VERSION_11
 
 ext {
     jmeVersion = '3.6.1-stable'