diff --git a/Cargo.lock b/Cargo.lock
index f2e99e77718..7ac2311c92b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -215,7 +215,7 @@ dependencies = [
  "chalk-ir",
  "ena",
  "indexmap 1.9.3",
- "itertools",
+ "itertools 0.10.5",
  "petgraph",
  "rustc-hash",
  "tracing",
@@ -497,7 +497,7 @@ dependencies = [
  "hir-def",
  "hir-expand",
  "hir-ty",
- "itertools",
+ "itertools 0.12.0",
  "once_cell",
  "profile",
  "rustc-hash",
@@ -526,7 +526,7 @@ dependencies = [
  "hir-expand",
  "indexmap 2.0.0",
  "intern",
- "itertools",
+ "itertools 0.12.0",
  "la-arena 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "limit",
  "mbe",
@@ -554,7 +554,7 @@ dependencies = [
  "expect-test",
  "hashbrown 0.12.3",
  "intern",
- "itertools",
+ "itertools 0.12.0",
  "la-arena 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "limit",
  "mbe",
@@ -586,7 +586,7 @@ dependencies = [
  "hir-def",
  "hir-expand",
  "intern",
- "itertools",
+ "itertools 0.12.0",
  "la-arena 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "limit",
  "nohash-hasher",
@@ -633,7 +633,7 @@ dependencies = [
  "ide-db",
  "ide-diagnostics",
  "ide-ssr",
- "itertools",
+ "itertools 0.12.0",
  "nohash-hasher",
  "oorandom",
  "profile",
@@ -659,7 +659,7 @@ dependencies = [
  "expect-test",
  "hir",
  "ide-db",
- "itertools",
+ "itertools 0.12.0",
  "profile",
  "smallvec",
  "sourcegen",
@@ -678,7 +678,7 @@ dependencies = [
  "expect-test",
  "hir",
  "ide-db",
- "itertools",
+ "itertools 0.12.0",
  "once_cell",
  "profile",
  "smallvec",
@@ -700,7 +700,7 @@ dependencies = [
  "fst",
  "hir",
  "indexmap 2.0.0",
- "itertools",
+ "itertools 0.12.0",
  "limit",
  "line-index 0.1.0-pre.1",
  "memchr",
@@ -731,7 +731,7 @@ dependencies = [
  "expect-test",
  "hir",
  "ide-db",
- "itertools",
+ "itertools 0.12.0",
  "once_cell",
  "profile",
  "serde_json",
@@ -750,7 +750,7 @@ dependencies = [
  "expect-test",
  "hir",
  "ide-db",
- "itertools",
+ "itertools 0.12.0",
  "nohash-hasher",
  "parser",
  "stdx",
@@ -838,6 +838,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25db6b064527c5d482d0423354fcd07a89a2dfe07b67892e62411946db7f07b0"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.6"
@@ -942,7 +951,7 @@ dependencies = [
  "crossbeam-channel",
  "ide",
  "ide-db",
- "itertools",
+ "itertools 0.12.0",
  "proc-macro-api",
  "project-model",
  "tracing",
@@ -1389,7 +1398,7 @@ dependencies = [
  "cargo_metadata",
  "cfg",
  "expect-test",
- "itertools",
+ "itertools 0.12.0",
  "la-arena 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "paths",
  "profile",
@@ -1583,7 +1592,7 @@ dependencies = [
  "ide",
  "ide-db",
  "ide-ssr",
- "itertools",
+ "itertools 0.12.0",
  "load-cargo",
  "lsp-server 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "lsp-types",
@@ -1860,7 +1869,7 @@ dependencies = [
  "either",
  "expect-test",
  "indexmap 2.0.0",
- "itertools",
+ "itertools 0.12.0",
  "once_cell",
  "parser",
  "proc-macro2",
@@ -1894,7 +1903,7 @@ dependencies = [
 name = "text-edit"
 version = "0.0.0"
 dependencies = [
- "itertools",
+ "itertools 0.12.0",
  "text-size",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 789d423ac20..3dda3582be1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -91,6 +91,7 @@ lsp-server = { version = "0.7.4" }
 
 # non-local crates
 anyhow = "1.0.75"
+itertools = "0.12.0"
 smallvec = { version = "1.10.0", features = [
   "const_new",
   "union",
diff --git a/crates/hir-def/Cargo.toml b/crates/hir-def/Cargo.toml
index 99b8e9bf0e1..cd0fe624717 100644
--- a/crates/hir-def/Cargo.toml
+++ b/crates/hir-def/Cargo.toml
@@ -21,7 +21,7 @@ drop_bomb = "0.1.5"
 either = "1.7.0"
 fst = { version = "0.4.7", default-features = false }
 indexmap = "2.0.0"
-itertools = "0.10.5"
+itertools.workspace = true
 la-arena.workspace = true
 once_cell = "1.17.0"
 rustc-hash = "1.1.0"
diff --git a/crates/hir-expand/Cargo.toml b/crates/hir-expand/Cargo.toml
index 1f27204c191..97d99a69ab0 100644
--- a/crates/hir-expand/Cargo.toml
+++ b/crates/hir-expand/Cargo.toml
@@ -17,7 +17,7 @@ tracing = "0.1.35"
 either = "1.7.0"
 rustc-hash = "1.1.0"
 la-arena.workspace = true
-itertools = "0.10.5"
+itertools.workspace = true
 hashbrown.workspace = true
 smallvec.workspace = true
 triomphe.workspace = true
diff --git a/crates/hir-ty/Cargo.toml b/crates/hir-ty/Cargo.toml
index c30807ad884..3699df98ec5 100644
--- a/crates/hir-ty/Cargo.toml
+++ b/crates/hir-ty/Cargo.toml
@@ -13,7 +13,7 @@ doctest = false
 
 [dependencies]
 cov-mark = "2.0.0-pre.1"
-itertools = "0.10.5"
+itertools.workspace = true
 arrayvec = "0.7.2"
 bitflags = "2.1.0"
 smallvec.workspace = true
diff --git a/crates/hir/Cargo.toml b/crates/hir/Cargo.toml
index 09ab60dd549..2df9be88f03 100644
--- a/crates/hir/Cargo.toml
+++ b/crates/hir/Cargo.toml
@@ -15,7 +15,7 @@ doctest = false
 rustc-hash = "1.1.0"
 either = "1.7.0"
 arrayvec = "0.7.2"
-itertools = "0.10.5"
+itertools.workspace = true
 smallvec.workspace = true
 triomphe.workspace = true
 once_cell = "1.17.1"
diff --git a/crates/ide-assists/Cargo.toml b/crates/ide-assists/Cargo.toml
index 447e38f91f4..2496169a6b2 100644
--- a/crates/ide-assists/Cargo.toml
+++ b/crates/ide-assists/Cargo.toml
@@ -14,7 +14,7 @@ doctest = false
 [dependencies]
 cov-mark = "2.0.0-pre.1"
 
-itertools = "0.10.5"
+itertools.workspace = true
 either = "1.7.0"
 smallvec.workspace = true
 
diff --git a/crates/ide-completion/Cargo.toml b/crates/ide-completion/Cargo.toml
index 092fb303668..60f90a41b96 100644
--- a/crates/ide-completion/Cargo.toml
+++ b/crates/ide-completion/Cargo.toml
@@ -13,7 +13,7 @@ doctest = false
 
 [dependencies]
 cov-mark = "2.0.0-pre.1"
-itertools = "0.10.5"
+itertools.workspace = true
 
 once_cell = "1.17.0"
 smallvec.workspace = true
diff --git a/crates/ide-db/Cargo.toml b/crates/ide-db/Cargo.toml
index faec7420681..409748fa73e 100644
--- a/crates/ide-db/Cargo.toml
+++ b/crates/ide-db/Cargo.toml
@@ -19,7 +19,7 @@ fst = { version = "0.4.7", default-features = false }
 rustc-hash = "1.1.0"
 once_cell = "1.17.0"
 either = "1.7.0"
-itertools = "0.10.5"
+itertools.workspace = true
 arrayvec = "0.7.2"
 indexmap = "2.0.0"
 memchr = "2.5.0"
diff --git a/crates/ide-db/src/source_change.rs b/crates/ide-db/src/source_change.rs
index 39763479c65..c7188f1f794 100644
--- a/crates/ide-db/src/source_change.rs
+++ b/crates/ide-db/src/source_change.rs
@@ -140,10 +140,10 @@ impl SnippetEdit {
             .with_position()
             .map(|pos| {
                 let (snippet, index) = match pos {
-                    itertools::Position::First(it) | itertools::Position::Middle(it) => it,
+                    (itertools::Position::First, it) | (itertools::Position::Middle, it) => it,
                     // last/only snippet gets index 0
-                    itertools::Position::Last((snippet, _))
-                    | itertools::Position::Only((snippet, _)) => (snippet, 0),
+                    (itertools::Position::Last, (snippet, _))
+                    | (itertools::Position::Only, (snippet, _)) => (snippet, 0),
                 };
 
                 let range = match snippet {
diff --git a/crates/ide-diagnostics/Cargo.toml b/crates/ide-diagnostics/Cargo.toml
index 14aa3940199..1e455dcfd65 100644
--- a/crates/ide-diagnostics/Cargo.toml
+++ b/crates/ide-diagnostics/Cargo.toml
@@ -14,7 +14,7 @@ doctest = false
 [dependencies]
 cov-mark = "2.0.0-pre.1"
 either = "1.7.0"
-itertools = "0.10.5"
+itertools.workspace = true
 serde_json = "1.0.86"
 once_cell = "1.17.0"
 
diff --git a/crates/ide-ssr/Cargo.toml b/crates/ide-ssr/Cargo.toml
index 70ed6dea5bf..56b29f92b82 100644
--- a/crates/ide-ssr/Cargo.toml
+++ b/crates/ide-ssr/Cargo.toml
@@ -14,7 +14,7 @@ doctest = false
 
 [dependencies]
 cov-mark = "2.0.0-pre.1"
-itertools = "0.10.5"
+itertools.workspace = true
 triomphe.workspace = true
 nohash-hasher.workspace = true
 
diff --git a/crates/ide/Cargo.toml b/crates/ide/Cargo.toml
index 2aee203c4ea..90e7847bc86 100644
--- a/crates/ide/Cargo.toml
+++ b/crates/ide/Cargo.toml
@@ -15,7 +15,7 @@ doctest = false
 cov-mark = "2.0.0-pre.1"
 crossbeam-channel = "0.5.5"
 either = "1.7.0"
-itertools = "0.10.5"
+itertools.workspace = true
 tracing = "0.1.35"
 oorandom = "11.1.3"
 pulldown-cmark-to-cmark = "10.0.4"
diff --git a/crates/load-cargo/Cargo.toml b/crates/load-cargo/Cargo.toml
index 26cfe8ead4b..e31b0c2c814 100644
--- a/crates/load-cargo/Cargo.toml
+++ b/crates/load-cargo/Cargo.toml
@@ -13,7 +13,7 @@ authors.workspace = true
 [dependencies]
 anyhow.workspace = true
 crossbeam-channel = "0.5.5"
-itertools = "0.10.5"
+itertools.workspace = true
 tracing = "0.1.35"
 
 ide.workspace = true
diff --git a/crates/project-model/Cargo.toml b/crates/project-model/Cargo.toml
index 99314ec889b..11dba4494f3 100644
--- a/crates/project-model/Cargo.toml
+++ b/crates/project-model/Cargo.toml
@@ -21,7 +21,7 @@ serde_json.workspace = true
 serde.workspace = true
 triomphe.workspace = true
 la-arena.workspace = true
-itertools = "0.10.5"
+itertools.workspace = true
 
 # local deps
 base-db.workspace = true
diff --git a/crates/rust-analyzer/Cargo.toml b/crates/rust-analyzer/Cargo.toml
index 0af48b0c9a9..90f8577996c 100644
--- a/crates/rust-analyzer/Cargo.toml
+++ b/crates/rust-analyzer/Cargo.toml
@@ -22,7 +22,7 @@ path = "src/bin/main.rs"
 anyhow.workspace = true
 crossbeam-channel = "0.5.5"
 dissimilar = "1.0.4"
-itertools = "0.10.5"
+itertools.workspace = true
 scip = "0.3.1"
 lsp-types = { version = "=0.94.0", features = ["proposed"] }
 parking_lot = "0.12.1"
diff --git a/crates/syntax/Cargo.toml b/crates/syntax/Cargo.toml
index dc92366d1c7..671da08737b 100644
--- a/crates/syntax/Cargo.toml
+++ b/crates/syntax/Cargo.toml
@@ -15,7 +15,7 @@ doctest = false
 [dependencies]
 cov-mark = "2.0.0-pre.1"
 either = "1.7.0"
-itertools = "0.10.5"
+itertools.workspace = true
 rowan = "0.15.11"
 rustc-hash = "1.1.0"
 once_cell = "1.17.0"
diff --git a/crates/text-edit/Cargo.toml b/crates/text-edit/Cargo.toml
index 76d0ca5ccb6..4620cc72d0a 100644
--- a/crates/text-edit/Cargo.toml
+++ b/crates/text-edit/Cargo.toml
@@ -12,5 +12,5 @@ rust-version.workspace = true
 doctest = false
 
 [dependencies]
-itertools = "0.10.5"
+itertools.workspace = true
 text-size.workspace = true