diff --git a/paper-api/src/main/java/org/bukkit/BlockChangeDelegate.java b/paper-api/src/main/java/org/bukkit/BlockChangeDelegate.java
index e6b9f0e67b..3f1afd9c1a 100644
--- a/paper-api/src/main/java/org/bukkit/BlockChangeDelegate.java
+++ b/paper-api/src/main/java/org/bukkit/BlockChangeDelegate.java
@@ -4,7 +4,9 @@ package org.bukkit;
  * A delegate for handling block changes. This serves as a direct interface
  * between generation algorithms in the server implementation and utilizing
  * code.
+ * @deprecated rarely used API that was largely for implementation purposes
  */
+@Deprecated
 public interface BlockChangeDelegate {
 
     /**
diff --git a/paper-api/src/main/java/org/bukkit/World.java b/paper-api/src/main/java/org/bukkit/World.java
index b6b90f3926..c8344c6daf 100644
--- a/paper-api/src/main/java/org/bukkit/World.java
+++ b/paper-api/src/main/java/org/bukkit/World.java
@@ -358,7 +358,9 @@ public interface World extends PluginMessageRecipient, Metadatable {
      * @param delegate A class to call for each block changed as a result of
      *     this method
      * @return true if the tree was created successfully, otherwise false
+     * @deprecated rarely used API that was largely for implementation purposes
      */
+    @Deprecated
     public boolean generateTree(Location loc, TreeType type, BlockChangeDelegate delegate);
 
     /**