diff --git a/Packages/kdtree/version b/Packages/kdtree/version
index 78e11fed4c1..319dd81d9ae 100644
--- a/Packages/kdtree/version
+++ b/Packages/kdtree/version
@@ -1 +1 @@
-2.2.20 (26 Jul 2001)
+2.2.21 ( 1 Aug 2001)