diff --git a/Cargo.lock b/Cargo.lock
index b23ea28cb..47024491e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1872,7 +1872,7 @@ dependencies = [
  "indexmap",
  "indoc",
  "insta",
- "itertools 0.12.1",
+ "itertools 0.13.0",
  "jj-cli",
  "jj-lib",
  "libc",
@@ -1926,7 +1926,7 @@ dependencies = [
  "ignore",
  "indoc",
  "insta",
- "itertools 0.12.1",
+ "itertools 0.13.0",
  "jj-lib-proc-macros",
  "maplit",
  "num_cpus",
@@ -2540,7 +2540,7 @@ checksum = "22505a5c94da8e3b7c2996394d1c933236c4d743e81a410bcca4e6989fc066a4"
 dependencies = [
  "bytes",
  "heck",
- "itertools 0.12.1",
+ "itertools 0.10.5",
  "log",
  "multimap",
  "once_cell",
@@ -2560,7 +2560,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "81bddcdb20abf9501610992b6759a4c888aef7d1a7247ef75e2404275ac24af1"
 dependencies = [
  "anyhow",
- "itertools 0.12.1",
+ "itertools 0.10.5",
  "proc-macro2",
  "quote",
  "syn",
@@ -3139,7 +3139,7 @@ dependencies = [
  "futures 0.3.30",
  "git2",
  "hex",
- "itertools 0.12.1",
+ "itertools 0.13.0",
  "jj-lib",
  "rand",
  "tempfile",
diff --git a/Cargo.toml b/Cargo.toml
index 056f46fe5..44672532a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -61,7 +61,7 @@ ignore = "0.4.20"
 indexmap = "2.2.5"
 indoc = "2.0.4"
 insta = { version = "1.39.0", features = ["filters"] }
-itertools = "0.12.1"
+itertools = "0.13.0"
 libc = { version = "0.2.155" }
 maplit = "1.0.2"
 minus = { version = "5.6.1", features = ["dynamic_output", "search"] }