diff --git a/build.gradle b/build.gradle
index a431ff6..321bc5f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,7 +8,7 @@ group = 'com.goi'
 version = '0.0.1-SNAPSHOT'
 
 java {
-    sourceCompatibility = '17'
+    sourceCompatibility = '21'
 }
 
 configurations {