diff --git a/Cargo.lock b/Cargo.lock
index 4f67ed049..79ba5144c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -312,7 +312,7 @@ dependencies = [
  "bitflags 2.5.0",
  "cexpr",
  "clang-sys",
- "itertools 0.12.1",
+ "itertools",
  "lazy_static",
  "lazycell",
  "proc-macro2",
@@ -620,7 +620,7 @@ dependencies = [
  "fs2",
  "futures",
  "indexmap 2.2.6",
- "itertools 0.11.0",
+ "itertools",
  "madsim",
  "madsim-tokio",
  "madsim-tonic",
@@ -669,7 +669,7 @@ dependencies = [
  "bincode",
  "curp-external-api",
  "engine",
- "itertools 0.11.0",
+ "itertools",
  "madsim-tokio",
  "prost",
  "serde",
@@ -1367,15 +1367,6 @@ version = "2.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f518f335dce6725a761382244631d86cf0ccb2863413590b31338feb467f9c3"
 
-[[package]]
-name = "itertools"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1c173a5686ce8bfa551b3563d0c2170bf24ca44da99c7ca4bfdab5418c3fe57"
-dependencies = [
- "either",
-]
-
 [[package]]
 name = "itertools"
 version = "0.12.1"
@@ -2232,7 +2223,7 @@ checksum = "80b776a1b2dc779f5ee0641f8ade0125bc1298dd41a9a0c16d8bd57b42d222b1"
 dependencies = [
  "bytes",
  "heck 0.5.0",
- "itertools 0.12.1",
+ "itertools",
  "log",
  "multimap",
  "once_cell",
@@ -2252,7 +2243,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "19de2de2a00075bf566bee3bd4db014b11587e84184d3f7a791bc17f1a8e9e48"
 dependencies = [
  "anyhow",
- "itertools 0.12.1",
+ "itertools",
  "proc-macro2",
  "quote",
  "syn 2.0.60",
@@ -2647,7 +2638,7 @@ dependencies = [
  "curp-test-utils",
  "engine",
  "futures",
- "itertools 0.11.0",
+ "itertools",
  "madsim",
  "madsim-tokio",
  "madsim-tonic",
@@ -3681,7 +3672,7 @@ dependencies = [
  "futures-channel",
  "futures-util",
  "getrandom",
- "itertools 0.12.1",
+ "itertools",
  "libc",
  "log",
  "madsim-tokio",
@@ -3747,7 +3738,7 @@ dependencies = [
  "event-listener 2.5.3",
  "futures",
  "hyper",
- "itertools 0.11.0",
+ "itertools",
  "jsonwebtoken",
  "log",
  "madsim-tokio",
@@ -3834,7 +3825,7 @@ dependencies = [
  "async-trait",
  "curp",
  "curp-external-api",
- "itertools 0.11.0",
+ "itertools",
  "madsim-tonic",
  "madsim-tonic-build",
  "prost",
diff --git a/crates/curp-test-utils/Cargo.toml b/crates/curp-test-utils/Cargo.toml
index fad63dccf..a8eebd982 100644
--- a/crates/curp-test-utils/Cargo.toml
+++ b/crates/curp-test-utils/Cargo.toml
@@ -15,7 +15,7 @@ async-trait = "0.1.80"
 bincode = "1.3.3"
 curp-external-api = { path = "../curp-external-api" }
 engine = { path = "../engine" }
-itertools = "0.11"
+itertools = "0.12"
 prost = "0.12.3"
 serde = { version = "1.0.130", features = ["derive", "rc"] }
 thiserror = "1.0.58"
diff --git a/crates/curp/Cargo.toml b/crates/curp/Cargo.toml
index 6840614c2..37721ac76 100644
--- a/crates/curp/Cargo.toml
+++ b/crates/curp/Cargo.toml
@@ -27,7 +27,7 @@ flume = "0.11.0"
 fs2 = "0.4.3"
 futures = "0.3.21"
 indexmap = "2.2.6"
-itertools = "0.11"
+itertools = "0.12"
 madsim = { version = "0.2.27", features = ["rpc", "macros"] }
 opentelemetry = { version = "0.21.0", features = ["metrics"] }
 parking_lot = "0.12.1"
@@ -53,7 +53,7 @@ workspace-hack = { version = "0.1", path = "../../workspace-hack" }
 [dev-dependencies]
 anyhow = "1.0.82"
 curp-test-utils = { path = "../curp-test-utils" }
-itertools = "0.11"
+itertools = "0.12"
 mockall = "0.12.1"
 once_cell = "1.17.0"
 tempfile = "3"
diff --git a/crates/simulation/Cargo.toml b/crates/simulation/Cargo.toml
index a2ee72c31..a9783b8e3 100644
--- a/crates/simulation/Cargo.toml
+++ b/crates/simulation/Cargo.toml
@@ -17,7 +17,7 @@ curp = { path = "../curp" }
 curp-test-utils = { path = "../curp-test-utils" }
 engine = { path = "../engine" }
 futures = "0.3.29"
-itertools = "0.11"
+itertools = "0.12"
 madsim = "0.2.27"
 parking_lot = "0.12.1"
 prost = "0.12.3"
diff --git a/crates/xline/Cargo.toml b/crates/xline/Cargo.toml
index 34b08e864..db09b50bc 100644
--- a/crates/xline/Cargo.toml
+++ b/crates/xline/Cargo.toml
@@ -28,7 +28,7 @@ engine = { path = "../engine" }
 event-listener = "2.5.2"
 futures = "0.3.25"
 hyper = "0.14.27"
-itertools = "0.11"
+itertools = "0.12"
 jsonwebtoken = "9.3.0"
 log = "0.4.21"
 merged_range = "0.1.0"
diff --git a/crates/xlineapi/Cargo.toml b/crates/xlineapi/Cargo.toml
index 659ee5a88..50497af8f 100644
--- a/crates/xlineapi/Cargo.toml
+++ b/crates/xlineapi/Cargo.toml
@@ -14,7 +14,7 @@ keywords = ["RPC", "Interfaces"]
 async-trait = "0.1.80"
 curp = { path = "../curp" }
 curp-external-api = { path = "../curp-external-api" }
-itertools = "0.11"
+itertools = "0.12"
 prost = "0.12.3"
 serde = { version = "1.0.137", features = ["derive"] }
 thiserror = "1.0.58"
diff --git a/workspace-hack/Cargo.toml b/workspace-hack/Cargo.toml
index 6b4d31d24..b78fe3aac 100644
--- a/workspace-hack/Cargo.toml
+++ b/workspace-hack/Cargo.toml
@@ -22,6 +22,7 @@ either = { version = "1", default-features = false, features = ["use_std"] }
 futures-channel = { version = "0.3", features = ["sink"] }
 futures-util = { version = "0.3", features = ["channel", "io", "sink"] }
 getrandom = { version = "0.2", default-features = false, features = ["js", "rdrand", "std"] }
+itertools = { version = "0.12" }
 libc = { version = "0.2", features = ["extra_traits"] }
 log = { version = "0.4", default-features = false, features = ["std"] }
 madsim-tokio = { git = "https://github.com/Phoenix500526/madsim.git", branch = "update-tonic", default-features = false, features = ["fs", "io-util", "macros", "net", "rt", "rt-multi-thread", "signal", "sync", "time"] }
@@ -48,7 +49,7 @@ zeroize = { version = "1", features = ["derive"] }
 bytes = { version = "1" }
 cc = { version = "1", default-features = false, features = ["parallel"] }
 either = { version = "1", default-features = false, features = ["use_std"] }
-itertools = { version = "0.12", default-features = false, features = ["use_alloc"] }
+itertools = { version = "0.12" }
 libc = { version = "0.2", features = ["extra_traits"] }
 log = { version = "0.4", default-features = false, features = ["std"] }
 memchr = { version = "2" }