diff --git a/build.gradle b/build.gradle
index 40ee406..c9f69b2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,8 +9,8 @@ version '1.0-SNAPSHOT'
 mainClassName = 'fr.packageviewer.Main'
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_13
-    targetCompatibility = JavaVersion.VERSION_13
+    sourceCompatibility = JavaVersion.VERSION_15
+    targetCompatibility = JavaVersion.VERSION_15
 }
 
 jar{