diff --git a/buildSrc/src/main/kotlin/bluemap.base.gradle.kts b/buildSrc/src/main/kotlin/bluemap.base.gradle.kts
index 7d5c8717..cbba77be 100644
--- a/buildSrc/src/main/kotlin/bluemap.base.gradle.kts
+++ b/buildSrc/src/main/kotlin/bluemap.base.gradle.kts
@@ -40,7 +40,7 @@ java {
 tasks.javadoc {
     (options as StandardJavadocDocletOptions).apply {
         links(
-            "https://docs.oracle.com/en/java/javase/16/docs/api/",
+            "https://docs.oracle.com/en/java/javase/21/docs/api/",
             "https://javadoc.io/doc/com.flowpowered/flow-math/1.0.3/",
             "https://javadoc.io/doc/com.google.code.gson/gson/2.8.9/",
         )