diff --git a/rust/hhat_lang/Cargo.lock b/rust/hhat_lang/Cargo.lock
index 0ae9b3b..65f0de1 100644
--- a/rust/hhat_lang/Cargo.lock
+++ b/rust/hhat_lang/Cargo.lock
@@ -285,9 +285,9 @@ dependencies = [
 
 [[package]]
 name = "itertools"
-version = "0.14.0"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b192c782037fadd9cfa75548310488aabdbf3d2da73885b31bd0abd03351285"
+checksum = "8b4baf93f58d4425749ca49a51c50ebab072c5df6994d08fed93541c331481dc"
 dependencies = [
  "either",
 ]
diff --git a/rust/hhat_lang/Cargo.toml b/rust/hhat_lang/Cargo.toml
index f8fae31..e9bc9de 100644
--- a/rust/hhat_lang/Cargo.toml
+++ b/rust/hhat_lang/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2024"
 [dependencies]
 peg = "0.8.5"
 walkdir = "2.5.0"
-itertools = "0.14.0"
+itertools = "0.15.0"
 cranelift = "0.128.3"
 cranelift-module = "0.128.3"
 cranelift-jit = "0.128.3"