diff --git a/pbjson-build/Cargo.toml b/pbjson-build/Cargo.toml
index 153eb80..ed71672 100644
--- a/pbjson-build/Cargo.toml
+++ b/pbjson-build/Cargo.toml
@@ -13,7 +13,7 @@ repository = "https://github.com/influxdata/pbjson"
 heck = "0.4"
 prost = "0.12"
 prost-types = "0.12"
-itertools = "0.10"
+itertools = "0.11"
 
 [dev-dependencies]
 tempfile = "3.1"