diff --git a/Cargo.lock b/Cargo.lock
index 421ea209..c853472f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -235,7 +235,7 @@ dependencies = [
  "ignore",
  "indoc",
  "insta",
- "itertools 0.12.0",
+ "itertools 0.13.0",
  "jobserver",
  "lazy_static",
  "mutants 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -749,9 +749,9 @@ dependencies = [
 
 [[package]]
 name = "itertools"
-version = "0.12.0"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25db6b064527c5d482d0423354fcd07a89a2dfe07b67892e62411946db7f07b0"
+checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
 dependencies = [
  "either",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 5b709554..217d72c0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -39,7 +39,7 @@ globset = "0.4.10"
 humantime = "2.1.0"
 ignore = "0.4.20"
 indoc = "2.0.0"
-itertools = "0.12"
+itertools = "0.13"
 jobserver = "0.1"
 mutants = "0.0.3"
 num_cpus = "1.16"