diff --git a/build.gradle.kts b/build.gradle.kts
index c1abd6d..61331a5 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -9,12 +9,6 @@ description = "Altitude Particles plugin."
 
 apply<JavaLibraryPlugin>()
 
-java {
-    toolchain {
-        languageVersion.set(JavaLanguageVersion.of(21))
-    }
-}
-
 tasks {
     withType<JavaCompile> {
         options.encoding = Charsets.UTF_8.name()