diff --git a/Cargo.toml b/Cargo.toml
index c83a2e349e46..633932a5a3b9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -37,7 +37,7 @@ toml = "0.7.3"
 walkdir = "2.3"
 # This is used by the `collect-metadata` alias.
 filetime = "0.2"
-itertools = "0.11"
+itertools = "0.12"
 
 # UI test dependencies
 clippy_utils = { path = "clippy_utils" }
diff --git a/clippy_dev/Cargo.toml b/clippy_dev/Cargo.toml
index 5ec67554e7d8..42a953039b1c 100644
--- a/clippy_dev/Cargo.toml
+++ b/clippy_dev/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 aho-corasick = "1.0"
 clap = "4.1.4"
 indoc = "1.0"
-itertools = "0.11"
+itertools = "0.12"
 opener = "0.6"
 shell-escape = "0.1"
 walkdir = "2.3"
diff --git a/clippy_lints/Cargo.toml b/clippy_lints/Cargo.toml
index 6e6e315bb656..6ae089b3e032 100644
--- a/clippy_lints/Cargo.toml
+++ b/clippy_lints/Cargo.toml
@@ -14,7 +14,7 @@ cargo_metadata = "0.18"
 clippy_config = { path = "../clippy_config" }
 clippy_utils = { path = "../clippy_utils" }
 declare_clippy_lint = { path = "../declare_clippy_lint" }
-itertools = "0.11"
+itertools = "0.12"
 quine-mc_cluskey = "0.2"
 regex-syntax = "0.8"
 serde = { version = "1.0", features = ["derive"] }
diff --git a/clippy_utils/Cargo.toml b/clippy_utils/Cargo.toml
index c7454fa3328b..bf55040ddbc1 100644
--- a/clippy_utils/Cargo.toml
+++ b/clippy_utils/Cargo.toml
@@ -7,7 +7,7 @@ publish = false
 [dependencies]
 clippy_config = { path = "../clippy_config" }
 arrayvec = { version = "0.7", default-features = false }
-itertools = "0.11"
+itertools = "0.12"
 rustc-semver = "1.1"
 
 [features]
diff --git a/declare_clippy_lint/Cargo.toml b/declare_clippy_lint/Cargo.toml
index 0f90cef5cdd2..296eb8dd3400 100644
--- a/declare_clippy_lint/Cargo.toml
+++ b/declare_clippy_lint/Cargo.toml
@@ -8,7 +8,7 @@ publish = false
 proc-macro = true
 
 [dependencies]
-itertools = "0.11"
+itertools = "0.12"
 quote = "1.0.21"
 syn = "2.0"