diff --git a/Cargo.lock b/Cargo.lock
index 2ee9a872d3ee2..1af01a42afd6a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -337,7 +337,7 @@ dependencies = [
  "humantime 2.0.1",
  "ignore",
  "im-rc",
- "itertools 0.10.1",
+ "itertools",
  "jobserver",
  "lazy_static",
  "lazycell",
@@ -442,7 +442,7 @@ dependencies = [
  "flate2",
  "git2",
  "glob",
- "itertools 0.10.1",
+ "itertools",
  "lazy_static",
  "remove_dir_all",
  "serde_json",
@@ -560,7 +560,7 @@ dependencies = [
  "chalk-ir",
  "ena",
  "indexmap",
- "itertools 0.10.1",
+ "itertools",
  "petgraph",
  "rustc-hash",
  "tracing",
@@ -624,7 +624,7 @@ dependencies = [
  "filetime",
  "futures 0.3.19",
  "if_chain",
- "itertools 0.10.1",
+ "itertools",
  "num_cpus",
  "parking_lot",
  "quote",
@@ -647,7 +647,7 @@ dependencies = [
  "cargo_metadata",
  "clap 2.34.0",
  "indoc",
- "itertools 0.10.1",
+ "itertools",
  "opener",
  "regex",
  "shell-escape",
@@ -661,7 +661,7 @@ dependencies = [
  "cargo_metadata",
  "clippy_utils",
  "if_chain",
- "itertools 0.10.1",
+ "itertools",
  "pulldown-cmark",
  "quine-mc_cluskey",
  "regex-syntax",
@@ -1783,15 +1783,6 @@ dependencies = [
  "cfg-if 1.0.0",
 ]
 
-[[package]]
-name = "itertools"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "284f18f85651fe11e8a991b2adb42cb078325c996ed026d994719efcfca1d54b"
-dependencies = [
- "either",
-]
-
 [[package]]
 name = "itertools"
 version = "0.10.1"
@@ -3138,7 +3129,7 @@ dependencies = [
  "futures 0.3.19",
  "heck",
  "home",
- "itertools 0.10.1",
+ "itertools",
  "jsonrpc-core",
  "lazy_static",
  "log",
@@ -3180,7 +3171,7 @@ dependencies = [
  "derive-new",
  "env_logger 0.9.0",
  "fst",
- "itertools 0.10.1",
+ "itertools",
  "json",
  "lazy_static",
  "log",
@@ -3411,7 +3402,7 @@ dependencies = [
 name = "rustc_ast_passes"
 version = "0.0.0"
 dependencies = [
- "itertools 0.10.1",
+ "itertools",
  "rustc_ast",
  "rustc_ast_pretty",
  "rustc_attr",
@@ -3454,7 +3445,7 @@ name = "rustc_borrowck"
 version = "0.0.0"
 dependencies = [
  "either",
- "itertools 0.10.1",
+ "itertools",
  "polonius-engine",
  "rustc_const_eval",
  "rustc_data_structures",
@@ -3536,7 +3527,7 @@ version = "0.0.0"
 dependencies = [
  "bitflags",
  "cc",
- "itertools 0.10.1",
+ "itertools",
  "jobserver",
  "libc",
  "object 0.28.1",
@@ -4019,7 +4010,7 @@ name = "rustc_mir_transform"
 version = "0.0.0"
 dependencies = [
  "coverage_test_macros",
- "itertools 0.10.1",
+ "itertools",
  "rustc_ast",
  "rustc_attr",
  "rustc_const_eval",
@@ -4419,7 +4410,7 @@ dependencies = [
  "askama",
  "atty",
  "expect-test",
- "itertools 0.10.1",
+ "itertools",
  "minifier",
  "pulldown-cmark",
  "rayon",
@@ -4501,7 +4492,7 @@ dependencies = [
  "env_logger 0.8.4",
  "getopts",
  "ignore",
- "itertools 0.9.0",
+ "itertools",
  "lazy_static",
  "log",
  "regex",
@@ -5181,7 +5172,7 @@ checksum = "744e9ed5b352340aa47ce033716991b5589e23781acb97cad37d4ea70560f55b"
 dependencies = [
  "combine",
  "indexmap",
- "itertools 0.10.1",
+ "itertools",
  "kstring",
  "serde",
 ]
diff --git a/compiler/rustc_ast_passes/Cargo.toml b/compiler/rustc_ast_passes/Cargo.toml
index 45b70420338dd..22742b2adbd4f 100644
--- a/compiler/rustc_ast_passes/Cargo.toml
+++ b/compiler/rustc_ast_passes/Cargo.toml
@@ -4,7 +4,7 @@ version = "0.0.0"
 edition = "2021"
 
 [dependencies]
-itertools = "0.10"
+itertools = "0.10.1"
 tracing = "0.1"
 rustc_ast_pretty = { path = "../rustc_ast_pretty" }
 rustc_attr = { path = "../rustc_attr" }
diff --git a/compiler/rustc_borrowck/Cargo.toml b/compiler/rustc_borrowck/Cargo.toml
index eb2fdbd07967d..0b531623ba6f5 100644
--- a/compiler/rustc_borrowck/Cargo.toml
+++ b/compiler/rustc_borrowck/Cargo.toml
@@ -8,7 +8,7 @@ doctest = false
 
 [dependencies]
 either = "1.5.0"
-itertools = "0.10"
+itertools = "0.10.1"
 tracing = "0.1"
 polonius-engine = "0.13.0"
 smallvec = { version = "1.6.1", features = ["union", "may_dangle"] }
diff --git a/compiler/rustc_codegen_ssa/Cargo.toml b/compiler/rustc_codegen_ssa/Cargo.toml
index 8bbf25ce030f8..87d0680bf6f30 100644
--- a/compiler/rustc_codegen_ssa/Cargo.toml
+++ b/compiler/rustc_codegen_ssa/Cargo.toml
@@ -9,7 +9,7 @@ test = false
 [dependencies]
 bitflags = "1.2.1"
 cc = "1.0.69"
-itertools = "0.10"
+itertools = "0.10.1"
 tracing = "0.1"
 libc = "0.2.50"
 jobserver = "0.1.22"
diff --git a/compiler/rustc_mir_transform/Cargo.toml b/compiler/rustc_mir_transform/Cargo.toml
index 7b000e2e1d226..4c1a7eaf6f03b 100644
--- a/compiler/rustc_mir_transform/Cargo.toml
+++ b/compiler/rustc_mir_transform/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 doctest = false
 
 [dependencies]
-itertools = "0.10"
+itertools = "0.10.1"
 smallvec = { version = "1.6.1", features = ["union", "may_dangle"] }
 tracing = "0.1"
 rustc_ast = { path = "../rustc_ast" }
diff --git a/src/librustdoc/Cargo.toml b/src/librustdoc/Cargo.toml
index 4371a914b4804..18a3498e34eba 100644
--- a/src/librustdoc/Cargo.toml
+++ b/src/librustdoc/Cargo.toml
@@ -17,7 +17,7 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 smallvec = "1.6.1"
 tempfile = "3"
-itertools = "0.10"
+itertools = "0.10.1"
 regex = "1"
 rustdoc-json-types = { path = "../rustdoc-json-types" }
 tracing = "0.1"
diff --git a/src/tools/clippy/Cargo.toml b/src/tools/clippy/Cargo.toml
index 5cc5530f874dd..d4ca9480bec62 100644
--- a/src/tools/clippy/Cargo.toml
+++ b/src/tools/clippy/Cargo.toml
@@ -43,7 +43,7 @@ rustc-workspace-hack = "1.0"
 clippy_utils = { path = "clippy_utils" }
 derive-new = "0.5"
 if_chain = "1.0"
-itertools = "0.10"
+itertools = "0.10.1"
 quote = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 syn = { version = "1.0", features = ["full"] }
diff --git a/src/tools/clippy/clippy_dev/Cargo.toml b/src/tools/clippy/clippy_dev/Cargo.toml
index d350d9a001827..d133e8cddabc7 100644
--- a/src/tools/clippy/clippy_dev/Cargo.toml
+++ b/src/tools/clippy/clippy_dev/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2021"
 bytecount = "0.6"
 clap = "2.33"
 indoc = "1.0"
-itertools = "0.10"
+itertools = "0.10.1"
 opener = "0.5"
 regex = "1.5"
 shell-escape = "0.1"
diff --git a/src/tools/clippy/clippy_lints/Cargo.toml b/src/tools/clippy/clippy_lints/Cargo.toml
index 40d7dd702628f..66e61660d313a 100644
--- a/src/tools/clippy/clippy_lints/Cargo.toml
+++ b/src/tools/clippy/clippy_lints/Cargo.toml
@@ -12,7 +12,7 @@ edition = "2021"
 cargo_metadata = "0.14"
 clippy_utils = { path = "../clippy_utils" }
 if_chain = "1.0"
-itertools = "0.10"
+itertools = "0.10.1"
 pulldown-cmark = { version = "0.9", default-features = false }
 quine-mc_cluskey = "0.2"
 regex-syntax = "0.6"
diff --git a/src/tools/rustfmt/Cargo.toml b/src/tools/rustfmt/Cargo.toml
index 8d9c4a7fb20cd..764714638a978 100644
--- a/src/tools/rustfmt/Cargo.toml
+++ b/src/tools/rustfmt/Cargo.toml
@@ -33,7 +33,7 @@ rustfmt-format-diff = []
 generic-simd = ["bytecount/generic-simd"]
 
 [dependencies]
-itertools = "0.9"
+itertools = "0.10.1"
 toml = "0.5"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"