diff --git a/Cargo.lock b/Cargo.lock
index fd89f8d..ce8eba3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -607,9 +607,9 @@ dependencies = [
 
 [[package]]
 name = "itertools"
-version = "0.9.0"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "284f18f85651fe11e8a991b2adb42cb078325c996ed026d994719efcfca1d54b"
+checksum = "37d572918e350e82412fe766d24b15e6682fb2ed2bbe018280caa810397cb319"
 dependencies = [
  "either",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 081aa7e..4491391 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -54,7 +54,7 @@ content_inspector = "0.2.4"
 unicode-segmentation = "1.6.0"
 derive_more = "0.99.11"
 derive_setters = "0.1"
-itertools = "0.9"
+itertools = "0.10"
 serde_json = "1.0"
 encoding = "0.2"
 
diff --git a/crates/codespell-dict/codegen/Cargo.toml b/crates/codespell-dict/codegen/Cargo.toml
index 7273ec7..674f17f 100644
--- a/crates/codespell-dict/codegen/Cargo.toml
+++ b/crates/codespell-dict/codegen/Cargo.toml
@@ -18,6 +18,6 @@ codecov = { repository = "crate-ci/typos" }
 phf = { version = "0.8", features = ["unicase"] }
 phf_codegen = "0.8"
 unicase = "2.5"
-itertools = "0.9"
+itertools = "0.10"
 codegenrs = "0.1"
 structopt = "0.3"
diff --git a/crates/misspell-dict/codegen/Cargo.toml b/crates/misspell-dict/codegen/Cargo.toml
index 65ee70b..b9204ca 100644
--- a/crates/misspell-dict/codegen/Cargo.toml
+++ b/crates/misspell-dict/codegen/Cargo.toml
@@ -18,7 +18,7 @@ codecov = { repository = "crate-ci/typos" }
 phf = { version = "0.8", features = ["unicase"] }
 phf_codegen = "0.8"
 unicase = "2.5"
-itertools = "0.9"
+itertools = "0.10"
 codegenrs = "0.1"
 structopt = "0.3"
 regex = "1"
diff --git a/crates/typos-dict/verify/Cargo.toml b/crates/typos-dict/verify/Cargo.toml
index d13f2c9..1eed64e 100644
--- a/crates/typos-dict/verify/Cargo.toml
+++ b/crates/typos-dict/verify/Cargo.toml
@@ -20,5 +20,5 @@ unicase = "2.5"
 codegenrs = "0.1"
 structopt = "0.3"
 varcon = { version = "0.2", path = "../../varcon" }
-itertools = "0.9"
+itertools = "0.10"
 edit-distance = "2.1"
diff --git a/crates/typos-vars/codegen/Cargo.toml b/crates/typos-vars/codegen/Cargo.toml
index a26b2e8..b957bcd 100644
--- a/crates/typos-vars/codegen/Cargo.toml
+++ b/crates/typos-vars/codegen/Cargo.toml
@@ -27,4 +27,4 @@ clap = "2"
 log = "0.4"
 env_logger = "0.7"
 clap-verbosity-flag = "0.3"
-itertools = "0.9"
+itertools = "0.10"
diff --git a/crates/typos/Cargo.toml b/crates/typos/Cargo.toml
index a128a7c..8122b90 100644
--- a/crates/typos/Cargo.toml
+++ b/crates/typos/Cargo.toml
@@ -20,6 +20,6 @@ thiserror = "1.0"
 regex = "1.3"
 once_cell = "1.2.0"
 serde = { version = "1.0", features = ["derive"] }
-itertools = "0.9"
+itertools = "0.10"
 log = "0.4"
 unicode-segmentation = "1.7.1"
diff --git a/crates/wikipedia-dict/codegen/Cargo.toml b/crates/wikipedia-dict/codegen/Cargo.toml
index 50dd622..6b191ad 100644
--- a/crates/wikipedia-dict/codegen/Cargo.toml
+++ b/crates/wikipedia-dict/codegen/Cargo.toml
@@ -18,6 +18,6 @@ codecov = { repository = "crate-ci/typos" }
 phf = { version = "0.8", features = ["unicase"] }
 phf_codegen = "0.8"
 unicase = "2.5"
-itertools = "0.9"
+itertools = "0.10"
 codegenrs = "0.1"
 structopt = "0.3"