diff --git a/build.gradle b/build.gradle
index 829e7055..4e45f82b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -39,8 +39,9 @@ application {
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_1_8
-    targetCompatibility = JavaVersion.VERSION_1_8
+    // https://docs.gradle.org/current/javadoc/org/gradle/api/JavaVersion.html
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
 }
 
 gradle.projectsEvaluated {