diff --git a/Cargo.lock b/Cargo.lock
index 5eb3b62..b84eb72 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -279,7 +279,7 @@ version = "0.4.0"
 dependencies = [
  "codegenrs",
  "dictgen",
- "itertools 0.11.0",
+ "itertools 0.12.0",
  "snapbox",
  "typos",
  "unicase",
@@ -757,6 +757,15 @@ 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 = "1.0.9"
@@ -842,7 +851,7 @@ version = "0.4.0"
 dependencies = [
  "codegenrs",
  "dictgen",
- "itertools 0.11.0",
+ "itertools 0.12.0",
  "regex",
  "snapbox",
  "unicase",
@@ -1461,7 +1470,7 @@ version = "0.10.17"
 dependencies = [
  "anyhow",
  "bstr",
- "itertools 0.11.0",
+ "itertools 0.12.0",
  "once_cell",
  "serde",
  "simdutf8",
@@ -1494,7 +1503,7 @@ dependencies = [
  "globset",
  "human-panic",
  "ignore",
- "itertools 0.11.0",
+ "itertools 0.12.0",
  "kstring",
  "log",
  "maplit",
@@ -1527,7 +1536,7 @@ dependencies = [
  "dictgen",
  "edit-distance",
  "indexmap",
- "itertools 0.11.0",
+ "itertools 0.12.0",
  "snapbox",
  "unicase",
  "varcon",
@@ -1539,7 +1548,7 @@ version = "0.8.13"
 dependencies = [
  "codegenrs",
  "dictgen",
- "itertools 0.11.0",
+ "itertools 0.12.0",
  "snapbox",
  "typos",
  "unicase",
@@ -1754,7 +1763,7 @@ version = "0.4.0"
 dependencies = [
  "codegenrs",
  "dictgen",
- "itertools 0.11.0",
+ "itertools 0.12.0",
  "snapbox",
  "unicase",
 ]
diff --git a/crates/codespell-dict/Cargo.toml b/crates/codespell-dict/Cargo.toml
index 20e6e52..6056ffe 100644
--- a/crates/codespell-dict/Cargo.toml
+++ b/crates/codespell-dict/Cargo.toml
@@ -21,7 +21,7 @@ dictgen = { version = "^0.2", path = "../dictgen" }
 
 [dev-dependencies]
 unicase = "2.7"
-itertools = "0.11"
+itertools = "0.12"
 codegenrs = "3.0"
 dictgen = { version = "^0.2", path = "../dictgen", features = ["codegen"] }
 snapbox = { version = "0.4.14", features = ["path"] }
diff --git a/crates/misspell-dict/Cargo.toml b/crates/misspell-dict/Cargo.toml
index 32b9865..2631e8b 100644
--- a/crates/misspell-dict/Cargo.toml
+++ b/crates/misspell-dict/Cargo.toml
@@ -20,7 +20,7 @@ dictgen = { version = "^0.2", path = "../dictgen" }
 
 [dev-dependencies]
 unicase = "2.7"
-itertools = "0.11"
+itertools = "0.12"
 codegenrs = "3.0"
 regex = "1"
 dictgen = { version = "^0.2", path = "../dictgen", features = ["codegen"] }
diff --git a/crates/typos-cli/Cargo.toml b/crates/typos-cli/Cargo.toml
index b3cd3a2..a2bcdd0 100644
--- a/crates/typos-cli/Cargo.toml
+++ b/crates/typos-cli/Cargo.toml
@@ -61,7 +61,7 @@ content_inspector = "0.2.4"
 unicode-segmentation = "1.10.1"
 derive_more = "0.99.17"
 derive_setters = "0.1"
-itertools = "0.11"
+itertools = "0.12"
 serde_json = "1.0"
 kstring = { version = "2.0.0", features = ["serde"] }
 typed-arena = "2.0.2"
diff --git a/crates/typos-dict/Cargo.toml b/crates/typos-dict/Cargo.toml
index 45a4e22..fe71858 100644
--- a/crates/typos-dict/Cargo.toml
+++ b/crates/typos-dict/Cargo.toml
@@ -17,7 +17,7 @@ dictgen = { version = "^0.2", path = "../dictgen" }
 
 [dev-dependencies]
 csv = "1.3"
-itertools = "0.11"
+itertools = "0.12"
 edit-distance = "2.1"
 unicase = "2.7"
 codegenrs = "3.0"
diff --git a/crates/typos-vars/Cargo.toml b/crates/typos-vars/Cargo.toml
index ba91c4b..e55f2b3 100644
--- a/crates/typos-vars/Cargo.toml
+++ b/crates/typos-vars/Cargo.toml
@@ -22,6 +22,6 @@ varcon-core = { version = "^4.0", path = "../varcon-core", features = ["flags"]
 typos = { version = "^0.10", path = "../typos" }
 unicase = "2.7"
 codegenrs = "3.0"
-itertools = "0.11"
+itertools = "0.12"
 dictgen = { version = "^0.2", path = "../dictgen", features = ["codegen"] }
 snapbox = { version = "0.4.14", features = ["path"] }
diff --git a/crates/typos/Cargo.toml b/crates/typos/Cargo.toml
index fbe21d1..2db7b8d 100644
--- a/crates/typos/Cargo.toml
+++ b/crates/typos/Cargo.toml
@@ -19,6 +19,6 @@ unicode-xid = "0.2.4"
 once_cell = "1.18.0"
 serde = { version = "1.0", features = ["derive"] }
 simdutf8 = "0.1.4"
-itertools = "0.11"
+itertools = "0.12"
 unicode-segmentation = "1.10.1"
 bstr = "1.7"
diff --git a/crates/wikipedia-dict/Cargo.toml b/crates/wikipedia-dict/Cargo.toml
index 8a0988b..096a3df 100644
--- a/crates/wikipedia-dict/Cargo.toml
+++ b/crates/wikipedia-dict/Cargo.toml
@@ -21,7 +21,7 @@ dictgen = { version = "^0.2", path = "../dictgen" }
 
 [dev-dependencies]
 unicase = "2.7"
-itertools = "0.11"
+itertools = "0.12"
 codegenrs = "3.0"
 dictgen = { version = "^0.2", path = "../dictgen", features = ["codegen"] }
 snapbox = { version = "0.4.14", features = ["path"] }