diff --git a/hugr/Cargo.toml b/hugr/Cargo.toml
index ff3a6c91f..03b643550 100644
--- a/hugr/Cargo.toml
+++ b/hugr/Cargo.toml
@@ -40,7 +40,7 @@ serde_yaml = "0.9.19"
 typetag = "0.2.7"
 smol_str = { version = "0.2.0", features = ["serde"] }
 derive_more = "0.99.17"
-itertools = "0.12.0"
+itertools = "0.13.0"
 html-escape = "0.2.13"
 bitvec = { version = "1.0.1", features = ["serde"] }
 enum_dispatch = "0.3.11"