diff --git a/moon.mod.json b/moon.mod.json
index 24c37a7..41ba0fb 100644
--- a/moon.mod.json
+++ b/moon.mod.json
@@ -1,6 +1,6 @@
 {
   "name": "Nanaloveyuki/BitLogger",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "deps": {
     "maria/json_parser": "0.1.1",
     "moonbitlang/async": "0.18.1"