diff --git a/README.md b/README.md
index 560c8c2..e482400 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# mace 0.0.17
+# mace 0.0.19
 
 ## insert performance
 ![mace_insert](./scripts/mace_insert.png)