diff --git a/build.gradle b/build.gradle
index f7affed..ff13bf0 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,6 +10,12 @@ buildscript {
     }
 }
 
+java {
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
+}
+
+
 apply plugin: 'kotlin'
 apply plugin: "com.github.johnrengelman.shadow"
 apply plugin: 'application'