diff --git a/build.gradle.kts b/build.gradle.kts
index 7c3678f..ceba236 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -67,7 +67,7 @@ spongeConvention {
 }
 
 indra {
-    javaVersions().target(17)
+    javaVersions().target(21)
 }
 
 indraCrossdoc {