diff --git a/build.gradle.kts b/build.gradle.kts
index a98bbc5..a682f24 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,11 +8,6 @@ description = "Altitude Quests plugin."
 
 apply<JavaLibraryPlugin>()
 
-java {
-    toolchain {
-        languageVersion.set(JavaLanguageVersion.of(21))
-    }
-}
 
 tasks {
     withType<JavaCompile> {