diff --git a/repo/Tree.h b/repo/Tree.h
index 2c7b7e4..cba9275 100644
--- a/repo/Tree.h
+++ b/repo/Tree.h
@@ -38,7 +38,7 @@
 @class Node;
 @class BlobKey;
 
-#define CURRENT_TREE_VERSION 20
+#define CURRENT_TREE_VERSION 22
 #define TREE_HEADER_LENGTH (8)
 
 @interface Tree : NSObject {