diff --git a/package-lock.json b/package-lock.json
index 3796796..3867ced 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@kky42/pi-flow",
-  "version": "2.1.5",
+  "version": "2.1.6",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@kky42/pi-flow",
-      "version": "2.1.5",
+      "version": "2.1.6",
       "license": "MIT",
       "dependencies": {
         "acorn": "^8.17.0"
diff --git a/package.json b/package.json
index 153aeaf..61af5db 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@kky42/pi-flow",
-  "version": "2.1.5",
+  "version": "2.1.6",
   "description": "Multi-backend subagents and dynamic workflow orchestration for pi.",
   "type": "module",
   "main": "./index.ts",