diff --git a/Cargo.lock b/Cargo.lock
index 75896db2e..052a89b62 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -891,7 +891,7 @@ dependencies = [
  "http 0.2.12",
  "humantime",
  "internal-dns",
- "itertools 0.13.0",
+ "itertools 0.12.1",
  "libc",
  "nexus-client",
  "omicron-common",
@@ -1048,7 +1048,7 @@ dependencies = [
  "http 0.2.12",
  "hyper",
  "hyper-staticfile",
- "itertools 0.13.0",
+ "itertools 0.12.1",
  "libc",
  "mime_guess",
  "nix 0.29.0",
@@ -1339,7 +1339,7 @@ dependencies = [
  "crucible-workspace-hack",
  "futures",
  "futures-core",
- "itertools 0.13.0",
+ "itertools 0.12.1",
  "ringbuffer",
  "serde",
  "serde_json",
@@ -2723,15 +2723,6 @@ dependencies = [
  "either",
 ]
 
-[[package]]
-name = "itertools"
-version = "0.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
-dependencies = [
- "either",
-]
-
 [[package]]
 name = "itoa"
 version = "1.0.9"
diff --git a/Cargo.toml b/Cargo.toml
index 832eba826..0f3aee76f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -58,7 +58,7 @@ humantime = "2.1.0"
 hyper = { version = "0.14", features = [ "full" ] }
 hyper-staticfile = "0.9.6"
 indicatif = { version = "0.17.8", features = ["rayon"] }
-itertools = "0.13.0"
+itertools = "0.12.1"
 libc = "0.2"
 mime_guess = "2.0.5"
 nbd = "0.3.1"