diff --git a/package.json b/package.json
index 4465ae8..da46919 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
 	},
 	"devDependencies": {
 		"aureooms-js-compare": "^1.4.5",
-		"aureooms-js-itertools": "^3.0.0",
+		"aureooms-js-itertools": "^3.1.1",
 		"aureooms-node-package": "^6.0.1"
 	},
 	"keywords": [