diff --git a/package.json b/package.json
index fa03896..cb8774b 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "@aureooms/js-array": "^4.0.0",
     "@aureooms/js-compare": "^1.4.5",
     "@aureooms/js-functools": "^2.0.3",
-    "@aureooms/js-itertools": "^3.1.1",
+    "@aureooms/js-itertools": "^3.2.1",
     "@aureooms/js-partition": "^8.0.0",
     "@aureooms/js-random": "^2.0.0",
     "@aureooms/js-search": "^0.0.4",