diff --git a/build.gradle b/build.gradle
index 3b3cbd0..6221ecf 100644
--- a/build.gradle
+++ b/build.gradle
@@ -23,5 +23,9 @@
 test {
     useJUnitPlatform()
 }
-
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(12)
+    }
+}
 mainClassName = 'Main'
\ No newline at end of file