diff --git a/package.json b/package.json
index a05b686..e8a7868 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "aureooms-js-compare": "^1.4.5",
-    "aureooms-js-itertools": "^1.3.0",
+    "aureooms-js-itertools": "^3.0.0",
     "aureooms-js-random": "^1.0.2",
     "ava": "^0.16.0",
     "babel-cli": "^6.16.0",