diff --git a/composer.json b/composer.json
index bf831eb..9f2c3a8 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
     "ext-json": "*",
     "ext-msgpack": "*",
     "start-point/etcd-php": "^1.1",
-    "game-worker/kiri-pool": "~v1.0",
+    "game-worker/kiri-pool": "^v1.0",
     "linkorb/etcd-php": "^1.6"
   },
   "replace": {